What episode is "Doubt" in Death Note?
"Doubt" is episode 10 of Death Note.
Spoiler-Safe Summary
safe readL engages Light in a psychological tennis game to study his behavior while they discuss the Kira case. Amid concerns for his father's health, Light vows to capture Kira, and both investigate carefully as mysterious audio tapes surface. The episode deepens the strategic tension between adversaries.
Full Plot Summary
spoilersIn a bid to profile Light's behavior, L challenges him to a game of tennis. L asks him some questions regarding the Kira case and invites him to help in the investigation. The two then receive news that Soichiro Yagami has had a heart attack and is in the hospital. Light promises to his father that he will make sure Kira is caught and executed for making him suffer. On the way out, L confronts and scrutinizes Light, still uncertain whether or not he is Kira. Light attempts a bluff and demands to be placed in a prison cell without television for one month to prove his innocence. L is satisfied but curious that Light should offer this proposition. Meanwhile, television station Sakura TV receives audio tapes from an anonymous person claiming to be Kira.
Episode FAQ
4 quick answersIs "Doubt" canon or filler?
"Doubt" is listed as canon in the current AnimeAnchor guide.
What story arc is "Doubt" part of?
"Doubt" is part of the First Half: Kira's Reign Arc.
Can I read this without spoilers?
Yes. Start with the spoiler-safe summary, then reveal the full plot only when you want the complete episode breakdown.
Series Cast
15Browse the main cast connected to this episode guide.
L main 
Light Yagami main 
Halle Lidner supporting 
Misa Amane supporting 
Near supporting 
Rem supporting 
Ryuk supporting 
Sayu Yagami supporting 
Soichiro Yagami supporting 
Touta Matsuda supporting 
Watari supporting 
Higuchi antagonist 
Mello antagonist