Death Note

Light Yagami is a brilliant 17-year-old student, one of the top scorers on his exams in all of Japan. One day as he leaves school, he finds a mysterious black notebook on the ground with "Death Note" written on it. The first thing written inside: "The human whose name is written in the notebook shall die." Light decides to use this to cleanse the world of evil by killing all the criminals. On the scene comes L, ace detective, who's determined to find Light—who the world now calls "Kira"—and track him down, thus bringing us an epic psychological thrill ride.

Death Note Another Note: Los Angeles BB Renzoku Satsujin Jiken

There's a serial killer loose in Los Angeles and the local authorities need help fast. For some reason the killer has been leaving a string of maddeningly arcane clues at each crime scene. Each of these clues, it seems, is an indecipherable roadmap to the next murder.
Onto the scene comes L, the mysterious super-sleuth. Despite his peculiar working habits-he's never shown his face in public, for example-he's the most decorated detective in the world and has never tackled a case he hasn't been able to crack.
But this time he needs help.
Enlisting the services of an FBI agent named Naomi Misora, L starts snooping around the City of Angels. It soon becomes apparent that the killing spree is a psychotic riddle designed to specifically engage L in a battle of wits. Stuck in the middle between killer and investigator, it's up to Misora to navigate both the dead bodies and the egos to solve the Los Angeles Murder Cases.

Death Note Another Note: Los Angeles BB Renzoku Satsujin Jiken Franchise