I’m going to count this as two books since it’s described as a “double novel” and includes two previously published books (Serial Uncut and Killers Uncut), along with a bunch of novellas and short stories by the same authors as a compilation. This book basically includes every Konrath and Crouch character written so far and strings their stories together chronologically.
There are over twenty characters throughout the book who keep running into each other in various stories. Sometimes that got a little confusing, but it helps if you’ve read any of the author’s other books. I’ve read several, but sometimes the characters got a little fuzzy anyways.