TMDB movie listing
Based on Keigo Higashino’s award-winning novel, THE DEVOTION OF SUSPECT X follows a professor (Wang Kai) assisting in a murder investigation, only to find that a longtime rival and friend (Zhang Luyi) from his early university days may be involved.
TMDB audience score
Based on 20 votes
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Availability in the US
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United States listings · Refreshed 14 Oct 2026. More horror to watch in the US
MyCinema quick facts
Worked out from the film's TMDB record and its United States provider listings. These are facts about the data, not a review.
Standard length · 1h 52m
At 1h 52m it sits between 90 minutes and two hours.
Mystery · Thriller
TMDB files it under mystery and thriller.
3 subscriptions · 7 free · 2 to rent · 3 to buy
Included with 3 subscription services: Amazon Prime Video, Amazon Prime Video with Ads, and Cineverse Amazon Channel. Free or ad-supported on Fawesome, Rakuten Viki, AsianCrush, and 4 more. Listed to rent from 2 stores. Listed to buy from 3 stores.
6.2 / 10 on TMDB
TMDB users rate it 6.2 out of 10 across 20 votes, a positive audience score. That is a small sample, so the score can still move a lot.
The scare meter is MyCinema's own rating, given by a person who has watched the film. It is not a TMDB score.
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The Glass Key
1942, 1h 25m
A crooked politician finds himself being accused of murder by a gangster from whom he refused help during a re-election campaign.
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