Well, just finished reading Death Note: Another Note - Los Angeles BB Murder Cases.
A book narrated by Mello. For those who don't know, it focuses on the cooperation between L and Naomi Misora (the fiancée of Raye Penber) - L chooses her as his pawn basically, because he investigates through her. It's basically the story about how L gained the nickname Ryuzaki and about a war between another Wammy's orphan B (Beyond Birthday) and L. It's about B trying to make a case L cannot solve. All of it becomes interesting when a weird and I mean a WEIRD detective just pops up at the crime scene just when Misora is investigating, and the detective's name is Rue Ryuzaki. Not telling you more, because I'd spoil the book, but I can tell you it's awesome. An average reader will find it really good, however a Death Note fan like me will find it FUCKING AMAZING.