The novella has the perfect and unique set-up: amputated limbs discovered at the zoo. I knew from the first percent the author had good story-telling ability, and I wanted to know what would happen next.
I liked Sam, the female lead detective, who would pop Hershey kisses any chance she got (like breath mints). For the most part she was hard-edged and tough, yet there were moments of vulnerability interspersed. I believe the author was going for a credible edge with this, but sometimes it seemed like Sam was a little too "touchy" and moved to tear up rather easily (personal opinion). This might have had more belonging if it were a full-length novel and we got to know her "inner workings" even better.
Yet, with this said, Sam had lost her sister to murder (which still remains a cold case and served as the motivation for Sam to become a cop), and made these murders touch closer to home. With the victims being women, I suppose it did make it personal for Sam...It just seemed like there was more mention of emotion during the reading of the book than felt natural for a tough cop.
Sam uses her background training in criminal profiling, but I found at times it was like "this is our guy", "oh, no it isn't". Again, that is just a personal observation as well.
All in all, though, an enjoyable read.