True-crime recs: * "American Predator." This is a new book that explores the life of Israel Keyes, a notorious serial killer from Alaska. Evil is not always interesting--although the part where (already-thin) Keyes seems to get a gastric ring to make himself into a more super-efficient killer ... is memorable--but do you know what *is* consistently interesting? The ingenuity of good people. "AP" does a fine job of tracking the smart moves of a heroic investigator--Payne--as he contends with moral turpitude and at least one really misguided colleague. You begin to see detective work as an art. Fabulous, hold-your-breath reporting. * "I Love You, Now Die." This is an unfortunate title: It makes me think of the musical, "I Love You, You're Perfect, Now Change." But the story is worth discovering. We're talking about the girl who sent a series of text messages to her "boyfriend," coaxing him toward suicide. That girl is now ...