Into the Deep: The Submarine Murder Case (2020)
Story overview
This documentary examines the 2016 murder of journalist Kim Wall by amateur inventor Peter Madsen aboard his homemade submarine. It follows the filmmaker's year-long project documenting Madsen before the crime, revealing the killer's psychology and focusing on the emotional journey of his young assistants as they confront their unwitting involvement and prepare to testify in court.
Parent Guide
This true crime documentary contains mature themes including murder, psychological manipulation, and legal proceedings. While not graphically violent in visual depiction, the subject matter is intense and disturbing. Recommended for mature audiences only.
Content breakdown
Detailed descriptions of a brutal murder (dismemberment), though not visually depicted. Crime scene photos and forensic evidence are shown. Psychological violence and manipulation are central themes.
Extremely disturbing content including murder descriptions, crime scene evidence, and psychological manipulation. The documentary explores how a charismatic inventor concealed violent tendencies. Themes of betrayal and complicity are emotionally challenging.
Occasional strong language in interviews and courtroom footage. Some profanity related to emotional reactions to the crime.
No sexual content or nudity depicted. The crime had sexual motivations mentioned in legal proceedings but not graphically described.
No substance use depicted or mentioned.
High emotional intensity throughout. Explores grief, betrayal, guilt, and the psychological impact on those involved. The young assistants' emotional journey is particularly intense as they process their unwitting involvement.
Parent tips
This documentary deals with a real-life violent crime and its aftermath. It includes disturbing descriptions of murder, psychological manipulation, and themes of complicity. Best suited for mature teens and adults who can process true crime content. Parents should watch first to assess appropriateness for their family.
Parent chat guide
Parent follow-up questions
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- What warning signs might someone have noticed about Peter Madsen's behavior?
- How do you think the young assistants felt when they realized what had happened?
- Why is it important for witnesses to testify in court cases?
- What responsibilities do documentary filmmakers have when covering sensitive topics like this?
🎭 Story Kernel
The film explores how obsession can become a prison, even before the crime occurs. It's not just about the murder of journalist Kim Wall, but about the psychological descent of inventor Peter Madsen, whose narcissistic drive to create a submarine mirrors his need for control and recognition. The documentary reveals how his grandiose vision of being a self-made genius masked a dangerous ego that ultimately led to destruction. The real tension comes from watching someone's passion project become their crime scene, questioning where innovation ends and madness begins.
🎬 Visual Aesthetics
The documentary employs a chilling contrast between the claustrophobic submarine interiors and the vast, indifferent ocean. Underwater shots feel both beautiful and ominous, with the dark blue palette creating a sense of dread. The camera lingers on the submarine's mechanical details, making the vessel feel like a character itself—a metal coffin. Interviews are framed tightly, emphasizing the psychological confinement of those involved. The absence of reenactments forces viewers to imagine the horror, making the actual evidence footage more disturbing.
🔍 Details & Easter Eggs
💡 Behind the Scenes
The documentary faced ethical challenges in balancing victim respect with factual reporting. Director Emma Sullivan spent years gaining trust from both the victim's family and the Danish legal system. Much of the submarine footage was obtained through court documents rather than staged recreations. The production team consulted with maritime experts to accurately depict the technical aspects without sensationalism. Kim Wall's own journalistic work informed the documentary's approach to investigative storytelling.
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Trailer
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