A new true-crime book, based on a capital murder that went down in Hidalgo County six years ago, hits the book shelves this week, and with any luck, enough people will find it of interest to make the time and effort it took to write it worthwhile. Granted, I wrote it, and really, this front-page story is nothing short of shameless self-promotion, but this is the first true-crime book I’ve written, so I’m anxious to get some feedback. The book, Murder for the Love of Money, is based on the killing of 96-year-old WW II vet Marty Knell inside his McAllen ...