A SERIAL KILLER IS SAYING IT WITH FLOWERS... In the fourth installment of Kimberly Amato's chilling hard-boiled mystery series, badass detective Jasmine Steele is back - and shockingly, to herself most of all - she's as happy as she's ever been. She and her brilliant psychologist partner Frankie are planning a wedding that's been years in the making, and she's settled into a new chapter of life with her nephew-turned-adopted son, Chase. But the good life turns out to be more fleeting than the detective's caffeine withdrawals. Jasmine, or Jazz, to her friends, gets a rude awakening when a 3-year-old cold case comes back hot. New York City's "Carnation Killer," a serial rapist and murderer, leaves his fifth calling card on a woman named Emilia Smith. The calling card? A heart-shaped carving into the woman's chest and a single white carnation. On the creep spectrum, Jazz puts this killer somewhere between Jack the Ripper and the Zodiac Killer. And her veteran right-hand man is on medical leave. She's joined instead by temporary partner Detective Sydney Locke, a welcome new character. Sydney's pretty green but has a fiery determination and talent for the beat that Jazz recognizes within minutes. Soon enough, they've got a mentor/protégé thing going - which certainly comes in handy at their often patriarchal workplace. And it turns out Jazz and Syd will need that and more when the military gets involved with the investigation- because the victim is none other than the daughter of a high-ranking official, and the brass knows more than they're saying. What the team do know is that Emilia's last night alive was spent at a college bar that sparks Jasmine' least happy memory -the very same establishment that served as a backdrop to her own early adult years, a past defiled and traumatized by a dangerous man. Just as Jazz is finally ready to be happy, her bone-chilling trauma comes rushing back. And the Carnation Killer is still out there.