This book in the series is amazing. Kate Rosetti, head detective in a special group of detectives specifically chosen for their abilities get called by the chief with a new case. She and her partner, Jimmy, who is heading soon for retirement find the victim, who was shot in the chest had a strange broken heart carved on his arm. When they get back to the office, Kate finds a young girl sitting at her desk. It appears the chief wants Kate to train her and mentor her to join her squad. Kate grudgingly says ok after trying to get out of it. She hates to work with anyone other than Jimmy. When they start investigating, Chloe, the newbie, had some interesting insights so Kate assigned her to do some searching on backgrounds on the suspects. In the meantime, she talks to her boyfriend, FBI detective Russo and tells him about the case. It rings a bell with him and it seems his FBI buddy, Brody, had a case similar to Kate's but the criminal those atrocities is sitting in jail so how can it be? To consult on the case, Russo brings his FBI Buddy to Minnesota to see if there is any relationship to Brody's case. This starts a whole bunch of twists, turns, another murder, not to mention Kate gets a surprising invitation to Gem's wedding, she likes Chloe and sees her as a good addition to the squad which makes her feel terrible because it means Jimmy's retirement is near at hand. To add to all this, Russo starts pressuring Kate to take the next step in their relationship. But is she ready? This is a page turning series you can't put down once you begin! The action flows from page to page and you like the characters so much you start to root for them. I can't wait to see what is going to happen next? I received and ARC but the opinions expressed here are strictly my own.