I haven't read anything called 'Cold Blooded Book' by that exact title. It's possible you're thinking of something like 'In Cold Blood' by Truman Capote, which is a true crime classic, but that's different. Sometimes book titles get misremembered, or it could be a lesser-known indie novel. If it's a new release, my algorithm hasn't picked it up yet.
You might want to check if the title is slightly different, like 'Cold-Blooded' or part of a series. I recall a romance novel series with 'cold-blooded' in the title, maybe about vampires or anti-heroes? Plot summaries for those tend to involve a brooding, emotionally detached protagonist who gets thawed out by love, often with a suspense subplot. Without the exact author, it's tough to pin down.
My suggestion is to search on Goodreads with a couple of keywords and the author's name if you have it. The plot could range from a thriller about a calculated killer to a paranormal story about a creature with literal cold blood. If you find the right one, let me know; I'm curious now too.