Copycat Killer by Laura Scott has Willow Emery finding her brother and sister-in-law dead with their toddler, Lucy crying nearby. The killings are identical to a crime that occurred twenty years prior. Detective Nate Slater and his K-9 partner, Murphy take the traumatized pair home to find Willow’s apartment ransacked. Are the crimes tied together? Slater works to keep Willow and Lucy safe while searching for the elusive criminal. As Slater spends time with Willow, he begins to fall for her. Slater knows, though, that marriage and family are not in his future. Can Willow change his mind? Copycat Killer is the first book in True Blue K-9 Unit: Brooklyn series. We are introduced to the staff of the newly formed Brooklyn K-9 Unit. Detective Nate Slater is nearby when Willow calls 9-1-1. He is surprised at the similarities to a 20-year-old cold case where the killer left 4-year-old Penelope McGregor as the only witness. Her older brother, Bradley was at a sleepover. Bradley is now a K-9 officer with their unit and Penelope is the desk clerk. I thought Copycat Killer was a suspenseful story. There is action that kept the book moving forward at a fast pace. I liked the camaraderie between the members of the K-9 unit and how sweet they were to Lucy. I, of course, loved following the investigation as they searched for the guilty party. The romance is sweet and natural. I was amazed at the talents of the K-9 dogs. They have amazing sniffers. I was disappointed that the murder investigation is not wrapped up in Copycat Killer. I hope we get the answers in the next True Blue K-9 Unit: Brooklyn novel. I especially enjoyed Willow’s strong faith and how she shared it with Lucy and Nate. Copycat Killer is an intriguing suspense with clever canines, a crazed killer, a cute kid, an affectionate aunt and determined detectives. ( )