MurderByDeath
Reading about the team - watching them really; it's written so well that I "see" it in my head as I read the words - working together, playing off each other and their individual strengths to solve the crimes, kept me unable to put the book down until the end. I loved watching Ben and Bonnie handle the Merge; I found it quietly poetic.
I'm left a tad confused about the ending though - it definitely reads as though there will be a fifth book but everything I've read on the author's website in the past points to this being the last book. I sincerely hope I'm wrong for so many reasons, one of them being I want to know what Aden's final play was. I'll have my fingers crossed for a fifth.