Everyone in My Family Has Killed Someone

I'm not sure what to rate this one so I'll come back to it. I'm between a 4.5 and a 5. I honestly enjoyed this twist on a murder mystery and the way the narrator broke the 4th wall. There were moments where I laughed out loud and I can honestly say I didn't predict the ending.

Edit: I'm giving it a 5. I really did like it and while I'm not running to read my copy of the 2nd one right away, I definitely am glad I bought it and am excited to read it at some point.