To Kill A Thief is a fanfic crossover with Phantom Thief Jeanne and Death Note. Light travels to a country where he becomes partners with Miyako in catching Jeanne. What she doesn't know is that he's Kira, the serial killer she'll try to apprehend.
- Big Bad Friend / False Friend: Guess who?
- Did You Just Punch Out Cthulhu?: Light's outburst about Dark Fin.
- Evil Counterpart / Shadow Archetype: Light to Miyako.
- Five-Man Band:
- Hired to Hunt Yourself
- If Miyako Kills Jeanne, She Will Be Just Like Light
- Not So Different
- "The Reason You Suck" Speech: Light gives this one out to Miyako regarding not believing Maron is Jeanne.Light: All those people fighting for justice, they lose. You want a world where people like that are made to be fools? Look at yourself, Miyako. You just made yourself a fool. Unlike you, who constantly denied her best friend is a thief because of the similarities, I immediately knew she's the thief we've been hunting down because of the similarities. You are a useless detective, Miyako. Do you hear me? Useless! Useless because you refused to believe your best friend is the thief we've been hunting down. If you want to be useful, kill the others! Shoot them! Shoot Maron and Chiaki!
- Red Oni, Blue Oni: Light and Miyako
- Unreliable Narrator: Light himself.
- Unwitting Pawn: Miyako.