Just read this GQ article on Swedish serial killer Thomas Quick.
Fascinating (if horrible) stuff. I think it's well worth a read:
In a remote psychiatric hospital in Sweden, there is a man known as Thomas Quick who has been convicted of unspeakable crimes. Over the course of multiple trials, he would tell his brutal stories—of stabbings, stranglings, rape, incest, cannibalism—to almost anyone who would listen. Then, after his eighth and final murder conviction, he went silent for nearly a decade. In the last few years, though, he has been thinking about all he has said and done, and now he has something new to confess: He left out the worst part of all