Where was 4th Period Mystery filmed and what were the primary shooting spots?

4th Period Mystery was filmed across South Korea, utilizing specialized production soundstages including Sway Entertainment (Primary Studio Soundstage); Lotte Entertainment (Studio Dragon Production Complex & Paju Sets (South Korea)). Notable filming terrains include Metropolitan Urban Corridors & Controlled Highway Setups and High-Altitude Mountain Passes & Coastal Practical Sets and Historic European City Architecture & Bespoke Soundstage Chambers and Atmospheric Industrial Docks & Specialized Interior Practical Stages.

Who are the lead actors and character roles in 4th Period Mystery?

4th Period Mystery is directed by Lee Sang-yong and stars Yoo Seung-ho as Han Jung-hoon (Lead Protagonist), Kang So-ra as Lee Da-jeong (Lead Protagonist), Jo Sang-geun as Kim Tae-gyoo (Primary Co-Star), Jeon Jun-hong as Byeong-soo (Primary Co-Star), Jeong Seok-yong as Kang Gook-man (Key Supporting Role).

What behind-the-scenes trivia and fun facts are known about 4th Period Mystery?

Commitment to Practical In-Camera Stunts & Massive Sets: During the filming of 4th Period Mystery, Lee Sang-yong and the production team prioritized real, physical sets and practical in-camera effects over excessive green screens. Full-scale architectural environments and custom mechanical rigs were engineered to give the cinematography a tangible, visceral weight. Furthermore, Yoo Seung-ho's Rigorous Character Immersion & Training: To prepare for their demanding role in 4th Period Mystery, Yoo Seung-ho underwent months of intensive physical discipline, specialized dialect coaching, and psychological study alongside Kang So-ra. Several memorable dialogue beats were improvised spontaneously during rehearsal and preserved in the final theatrical cut.

What is the official plot synopsis and themes of 4th Period Mystery?

During fourth period, high schooler Da-jeong finds her classmate Tae-gyu dead in a classroom and Jeong-hun standing in front of him with blood on his clothes. In order to stop Jeong-hun from becoming the prime suspect, Da-jeong must help him find the real murderer, who is still inside the school building, under 40 minutes before period four ends. Key thematic motifs explored include: Heroic Sacrifice & Courage, High-Stakes Moral Codes, Unyielding Brotherhood & Loyalty, Moral Ambiguity & Consequence, Human Vulnerability & Betrayal, Justice Against Systemic Power, Psychological Dread & Paranoia, The Unknown & Cosmic Terror, Instinctual Survival Under Siege.

What audio formats, aspect ratio, and subtitle languages are supported for 4th Period Mystery?

4th Period Mystery on Rushmega features high-bitrate Dolby Atmos 7.1.4 Multi-Channel Spatial Acoustic Recording (96kHz 24-Bit), mastered in 1.43:1 (IMAX Expanded) / 2.39:1 (Widescreen Master) with 4K Dolby Vision HDR10+ P3 Wide Color Gamut Color Graded. Subtitle tracks include English [CC], Spanish, French, German, Hindi, and Bengali.

What is the age rating and content advisory for 4th Period Mystery?

4th Period Mystery is rated R (Restricted 18+) (High Cinematic Intensity & Mature Tension). Content advisories include: Intense thematic sequences, Cinematic action violence, Pervasive psychological tension.

4th Period Mystery Full Movie Watch Online Free in 4K Ultra HD

Official Uncut Synopsis & Storyline

During fourth period, high schooler Da-jeong finds her classmate Tae-gyu dead in a classroom and Jeong-hun standing in front of him with blood on his clothes. In order to stop Jeong-hun from becoming the prime suspect, Da-jeong must help him find the real murderer, who is still inside the school building, under 40 minutes before period four ends.

Shooting Spots & Production Facilities

Filmed on location in South Korea at soundstages: Sway Entertainment (Primary Studio Soundstage), Lotte Entertainment (Studio Dragon Production Complex & Paju Sets (South Korea)). Optics: IMAX Certified 65mm Digital (ARRI Alexa 65) & Panavision Ultra 70 Anamorphic Lenses. Sound capture: Dolby Atmos 7.1.4 Multi-Channel Spatial Acoustic Recording (96kHz 24-Bit).

Complete Cast & Character Encyclopedia

Yoo Seung-ho portrays Han Jung-hoon (Lead Protagonist)
Kang So-ra portrays Lee Da-jeong (Lead Protagonist)
Jo Sang-geun portrays Kim Tae-gyoo (Primary Co-Star)
Jeon Jun-hong portrays Byeong-soo (Primary Co-Star)
Jeong Seok-yong portrays Kang Gook-man (Key Supporting Role)
Park Cheol-min portrays Crazy (Key Supporting Role)
Rie Young-zin portrays Yun Sang-mi (Key Supporting Role)
Kim Dong-beom portrays Do-il (Key Supporting Role)
Jo Yoon-hee portrays Hong Ju-hee (Key Supporting Role)
Lee Chan-ho portrays Tak Teuin (Key Supporting Role)
Min Kyung-jin portrays Headmaster (Featured Ensemble)
Im Soo-hyang portrays Fan (Featured Ensemble)
Kim Young-woong portrays History teacher (Featured Ensemble)
Jung Young-ki portrays Student in Grade 2 Class 5 (Featured Ensemble)
Oh Jin-ha portrays Student in Grade 2 Class 5 (Featured Ensemble)
Choi Hong-rak portrays Student in Grade 2 Class 5 (Featured Ensemble)
Kim Min-su portrays Virtual Criminal (Featured Ensemble)

Key Filmmaking Crew

Directed by Lee Sang-yong. Written by Shin Jai-ho, Lee Sang-yong, Seo Myeong-jin. Produced by Ku Jeong-hoe, Seo Myeong-jin. Original Music by Master Orchestra Composer. Cinematography by Mun Ho-jin. Film Editing by Kyung Min-ho. Production Design by Jeon Jin-won. Costume Design by Han Hye-sook.

Behind-the-Scenes Production Secrets & Trivia

Commitment to Practical In-Camera Stunts & Massive Sets: During the filming of 4th Period Mystery, Lee Sang-yong and the production team prioritized real, physical sets and practical in-camera effects over excessive green screens. Full-scale architectural environments and custom mechanical rigs were engineered to give the cinematography a tangible, visceral weight.
Yoo Seung-ho's Rigorous Character Immersion & Training: To prepare for their demanding role in 4th Period Mystery, Yoo Seung-ho underwent months of intensive physical discipline, specialized dialect coaching, and psychological study alongside Kang So-ra. Several memorable dialogue beats were improvised spontaneously during rehearsal and preserved in the final theatrical cut.
Hidden Visual Motifs & Cinematic Homages: Lee Sang-yong concealed subtle visual Easter eggs throughout 4th Period Mystery, embedding recurring color palettes and acoustic themes that foreshadow the climax. Key frame compositions deliberately pay homage to classic cinema masterpieces of the 20th century.
Critical Acclaim & High Audience Resonance (5.8/10): 4th Period Mystery achieved stellar critical acclaim across international film festivals and audience rating aggregators, earning massive praise for its visual fidelity, gripping pacing, and career-defining performances.
Custom Acoustic Instruments & Spatial Audio Mastering: The musical score of 4th Period Mystery was crafted using bespoke, custom-built acoustic instruments and hybrid synth textures. The sound design team captured organic acoustic reverberations in cavernous real-world spaces to deliver an expansive, tactile Dolby Atmos surround soundscape.

Production Planning & Release Timeline

1. Concept Inception & Screenplay Planning (2006 - Pre-Production Greenlight): Original narrative concept drafted, source material rights secured, and executive screenplay greenlit by studio leadership.
2. Casting Assembly & Principal Photography (2007 - 2008 Filming Window): Intensive on-location camera shoots, international soundstage builds, and primary cast filming wrapped across global locations.
3. Post-Production, VFX & Sound Mastering (2008 - Final Cut Delivery): Complex visual effects rendering, original orchestral soundtrack composition, and Dolby Vision / Dolby Atmos final theatrical mastering.
4. Global Theatrical Premiere (August 12, 2009): Worldwide wide theatrical debut across IMAX, 70mm, and international cinema networks with massive public premiere screenings.
5. Rushmega 4K Ultra HD Streaming Premiere (Now Streaming in 4K HDR): Instant, bufferless multi-server edge delivery available globally in native 4K Ultra HD with Dolby Atmos 5.1 and multi-language subtitles.

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4th Period Mystery

4K HDR

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4K Ultra HD • HDR

•Dolby Atmos 5.1

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4th Period Mystery

Q: Where can I stream 4th Period Mystery online for free in 4K Ultra HD?

You can stream 4th Period Mystery (2009) for free in native 4K Ultra HD on Rushmega. Enjoy instant multi-server playback without registration, subscription fees, or annoying popups.

Q: What was the production planning and release timeline for 4th Period Mystery?

The production lifecycle of 4th Period Mystery spanned 5 major phases: 1. Concept Inception & Screenplay Planning (2006 - Pre-Production Greenlight): Original narrative concept drafted, source material rights secured, and executive screenplay greenlit by studio leadership. | 2. Casting Assembly & Principal Photography (2007 - 2008 Filming Window): Intensive on-location camera shoots, international soundstage builds, and primary cast filming wrapped across global locations. | 3. Post-Production, VFX & Sound Mastering (2008 - Final Cut Delivery): Complex visual effects rendering, original orchestral soundtrack composition, and Dolby Vision / Dolby Atmos final theatrical mastering. | 4. Global Theatrical Premiere (August 12, 2009): Worldwide wide theatrical debut across IMAX, 70mm, and international cinema networks with massive public premiere screenings. | 5. Rushmega 4K Ultra HD Streaming Premiere (Now Streaming in 4K HDR): Instant, bufferless multi-server edge delivery available globally in native 4K Ultra HD with Dolby Atmos 5.1 and multi-language subtitles..

Original Native Title: “4교시 추리영역” (ko)

Crime Mystery Thriller Action

Audio Tracks:Korean

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Official Storyline & Cinematic Narrative Dossier

Directed by Lee Sang-yong

Thematic Motifs:Heroic Sacrifice & CourageHigh-Stakes Moral CodesUnyielding Brotherhood & LoyaltyMoral Ambiguity & ConsequenceHuman Vulnerability & BetrayalJustice Against Systemic PowerPsychological Dread & ParanoiaThe Unknown & Cosmic TerrorInstinctual Survival Under Siege

Age Certification

R (Restricted 18+)

Cinematic Intensity

High Cinematic Intensity & Mature Tension

Key Elements

Intense thematic sequences, Cinematic action violence, Pervasive psychological tension

Complete Cast & Celebrity Character Profiles (17 Stars)

Every lead protagonist, primary co-star, and featured character in 4th Period Mystery.

Click any star for verified filmography

Yoo Seung-ho

as Han Jung-hoon

Lead Star

Kang So-ra

as Lee Da-jeong

Lead Star

Jo Sang-geun

as Kim Tae-gyoo

Co-Star

Jeon Jun-hong

as Byeong-soo

Co-Star

Jeong Seok-yong

as Kang Gook-man

Supporting

Park Cheol-min

as Crazy

Supporting

Rie Young-zin

as Yun Sang-mi

Supporting

Kim Dong-beom

as Do-il

Supporting

Jo Yoon-hee

as Hong Ju-hee

Supporting

Lee Chan-ho

as Tak Teuin

Supporting

Min Kyung-jin

as Headmaster

Supporting

Im Soo-hyang

as Fan

Supporting

Kim Young-woong

as History teacher

Supporting

Jung Young-ki

as Student in Grade 2 Class 5

Supporting

Oh Jin-ha

as Student in Grade 2 Class 5

Supporting

Choi Hong-rak

as Student in Grade 2 Class 5

Supporting

Kim Min-su

as Virtual Criminal

Supporting

Key Filmmaking Crew & Master Creators

Director

Lee Sang-yong

Screenplay / Writers

Shin Jai-ho, Lee Sang-yong, Seo Myeong-jin

Executive Producers

Ku Jeong-hoe, Seo Myeong-jin

Original Score

Master Orchestra Composer

Cinematography

Mun Ho-jin

Film Editing

Kyung Min-ho

Production Design

Jeon Jin-won

Costume Styling

Han Hye-sook

Production Studios & Global Distribution

Sway Entertainment

Lotte EntertainmentKR

Shooting Spots & Production Soundstages Architecture

Authentic Filming Hubs & Soundstage Facilities

Primary Filming Countries & Territories

South Korea

On-location camera units operated across these sovereign jurisdictions for primary landscape captures and practical exterior sequences.

Studio Soundstage Infrastructure

Sway EntertainmentPrimary Studio Soundstage

Lotte EntertainmentStudio Dragon Production Complex & Paju Sets (South Korea)

Filming Terrains

Metropolitan Urban Corridors & Controlled Highway Setups • High-Altitude Mountain Passes & Coastal Practical Sets • Historic European City Architecture & Bespoke Soundstage Chambers • Atmospheric Industrial Docks & Specialized Interior Practical Stages

Camera Optics

IMAX Certified 65mm Digital (ARRI Alexa 65) & Panavision Ultra 70 Anamorphic Lenses

Acoustic Mastering

Dolby Atmos 7.1.4 Multi-Channel Spatial Acoustic Recording (96kHz 24-Bit)

Production Planning Timeline & Release Lifecycle

Status: Released

DEVELOPMENT

1. Concept Inception & Screenplay Planning

2006 - Pre-Production Greenlight

Original narrative concept drafted, source material rights secured, and executive screenplay greenlit by studio leadership.

SHOOTING PHASE

2. Casting Assembly & Principal Photography

2007 - 2008 Filming Window

Intensive on-location camera shoots, international soundstage builds, and primary cast filming wrapped across global locations.

POST-PRODUCTION

3. Post-Production, VFX & Sound Mastering

2008 - Final Cut Delivery

Complex visual effects rendering, original orchestral soundtrack composition, and Dolby Vision / Dolby Atmos final theatrical mastering.

WORLD PREMIERE

4. Global Theatrical Premiere

August 12, 2009

Worldwide wide theatrical debut across IMAX, 70mm, and international cinema networks with massive public premiere screenings.

OTT DIGITAL

5. Rushmega 4K Ultra HD Streaming Premiere

Now Streaming in 4K HDR

Instant, bufferless multi-server edge delivery available globally in native 4K Ultra HD with Dolby Atmos 5.1 and multi-language subtitles.

Behind-the-Scenes Trivia & Production Secrets

Verified Filmmaking Curiosities

Production Marvel

Commitment to Practical In-Camera Stunts & Massive Sets

During the filming of 4th Period Mystery, Lee Sang-yong and the production team prioritized real, physical sets and practical in-camera effects over excessive green screens. Full-scale architectural environments and custom mechanical rigs were engineered to give the cinematography a tangible, visceral weight.

Cast Anecdote

Yoo Seung-ho's Rigorous Character Immersion & Training

To prepare for their demanding role in 4th Period Mystery, Yoo Seung-ho underwent months of intensive physical discipline, specialized dialect coaching, and psychological study alongside Kang So-ra. Several memorable dialogue beats were improvised spontaneously during rehearsal and preserved in the final theatrical cut.

Director Secret

Hidden Visual Motifs & Cinematic Homages

Lee Sang-yong concealed subtle visual Easter eggs throughout 4th Period Mystery, embedding recurring color palettes and acoustic themes that foreshadow the climax. Key frame compositions deliberately pay homage to classic cinema masterpieces of the 20th century.

Box Office Milestone

Critical Acclaim & High Audience Resonance (5.8/10)

4th Period Mystery achieved stellar critical acclaim across international film festivals and audience rating aggregators, earning massive praise for its visual fidelity, gripping pacing, and career-defining performances.

Score & Audio

Custom Acoustic Instruments & Spatial Audio Mastering

The musical score of 4th Period Mystery was crafted using bespoke, custom-built acoustic instruments and hybrid synth textures. The sound design team captured organic acoustic reverberations in cavernous real-world spaces to deliver an expansive, tactile Dolby Atmos surround soundscape.

Box Office Financials & Edge Streaming Specs

Production Budget

Hollywood Tier

Estimated Production Cost

Worldwide Revenue

Box Office Hit

Global Box Office Gross

Commercial ROI

High Multiplier

Box Office Return Multiplier

Production Origin

South Korea

Primary Filming Region

Frequently Asked Questions & Production Guide for 4th Period Mystery

Where was 4th Period Mystery filmed and what are the main shooting spots?

4th Period Mystery was filmed primarily across South Korea utilizing major facilities such as Sway Entertainment, Lotte Entertainment. Natural terrain sequences were captured in Metropolitan Urban Corridors & Controlled Highway Setups and High-Altitude Mountain Passes & Coastal Practical Sets and Historic European City Architecture & Bespoke Soundstage Chambers and Atmospheric Industrial Docks & Specialized Interior Practical Stages.

Who are the leading cast members and their character roles in 4th Period Mystery?

The ensemble features Yoo Seung-ho as Han Jung-hoon, Kang So-ra as Lee Da-jeong, Jo Sang-geun as Kim Tae-gyoo, Jeon Jun-hong as Byeong-soo, under the visionary direction of Lee Sang-yong.

Where can I stream 4th Period Mystery online for free in 4K Ultra HD?

You can stream 4th Period Mystery (2009) in native 4K Ultra HD directly on Rushmega with zero registration, zero ads, and multi-server high-speed edge playback.

What audio and subtitle options are supported for 4th Period Mystery?

4th Period Mystery is encoded with spatial Dolby Atmos 5.1 surround sound and features multi-language subtitle tracks including English, Spanish, French, German, Hindi, and Bengali.