What to read, watch, and listen to if you lovedSix Four
Hideo Yokoyama · Book · 2016
If you loved Six Four, start with Tokyo Vice (J.T. Rogers, 2022) — a series on the same thread. Below: 4 films, 4 series and 2 podcasts, each matched to Six Four across media.
What hooked you in Six Four was the way systemic institutional corruption forces individuals to confront the heavy, lingering weight of past trauma.
Films on the same thread

High and Low
Film · 1963
Shares a thread with Six Four: Police Procedural.
Like Six Four, this film masterfully dissects the moral agony of a kidnapping, forcing a protagonist to weigh personal tragedy against the rigid, often indifferent demands of the law.

Shoplifters
Hirokazu Kore-eda · Film · 2018
Explores: Chosen Family, Poverty, Child Neglect.
While Six Four focuses on police bureaucracy, this film mirrors its exploration of social fragility and the devastating, long-term ripples that child neglect leaves on both family and society.

Stray Dog
Akira Kurosawa · Film · 1949
Shares a thread with Six Four: Police procedural.
This classic shares the gritty, atmosphere-heavy obsession found in Six Four, following a detective whose search for a criminal becomes a desperate, soul-searching mission to reclaim lost innocence.

The Girl with the Dragon Tattoo
Niels Arden Oplev · Film · 2009
Shares a thread with Six Four: cold case.
Much like the cold case at the heart of Six Four, this story peels back layers of institutional rot and dark history to reveal how past sins haunt the present.
Series on the same thread

Tokyo Vice
J.T. Rogers · Series · 2022
Shares a thread with Six Four: Police Procedural.
If you were captivated by the internal politics of the police force in Six Four, this look at the Tokyo underworld provides a similarly immersive, authentic deep-dive into corruption.

Prime Suspect
Lynda La Plante · Series · 1991
Shares a thread with Six Four: Police Procedural.
This series captures the same intense, high-stakes professional pressure found in Six Four, centering on a protagonist fighting to maintain their integrity within a rigid, male-dominated investigative hierarchy.

Cold Case
Meredith Stiehm · Series · 2003
Shares a thread with Six Four: Police Procedural.
The focus on the long-term emotional toll of unsolved mysteries in this series echoes the central grief and persistence of the investigators depicted throughout Six Four.

The Night Manager
David Farr · Series · 2016
Explores: Undercover Operation, Moral Ambiguity, International Intrigue.
This narrative mirrors the tension and moral complexity of Six Four by placing a single individual at the center of vast, shadowy networks where truth is buried under layers.
Podcasts on the same thread
Missing Niamh
Podcast
Shares 2 threads with Six Four: cold case, grief.
The investigative rigor and the focus on the agonizing, open-ended nature of a missing persons case perfectly match the central haunting mystery that drives the plot of Six Four.

Cold
KSL Podcasts · Podcast · 2026
Explores: Missing Persons, Cold Cases, Criminal Investigation.
Readers drawn to the meticulous, slow-burn procedural style of Six Four will appreciate this methodical approach to uncovering the truth behind cold cases that have long remained dormant.
Keep exploring
Common questions
Is Six Four based on a true story?
Six Four is a 2016 novel by Hideo Yokoyama. While it depicts a fictional kidnapping case that remains unsolved for fourteen years, the narrative is a work of fiction rather than a factual account of a real-life crime in Japan.
What happens to the victim in Six Four?
In Six Four, the seven-year-old schoolgirl is kidnapped in January 1989. After five days of ransom demands, the parents never see their daughter again. The identity of the kidnapper remains unknown to the parents and the public for the fourteen years that follow the crime.
How long is the timeline covered in Six Four?
Six Four begins with a kidnapping incident that occurs over five days in January 1989. The narrative then follows the aftermath of this case for a period of fourteen years, focusing on the unresolved nature of the investigation and its long-term impact on those involved.
Does Six Four reveal who the kidnapper is?
The plot of Six Four centers on a case that no detective could solve. The parents of the victim never learn the identity of the person who kidnapped their daughter, and the mystery remains a central element of the story throughout the fourteen-year period described.