When a member of 's team turns up at her door begging for help, Casey races to find the broken body of twenty-year-old abandoned in a sunflower field. Yellow petals and broken stalks scatter the ground-and Casey immediately recognizes the red markings all over Charlie's body as arrow wounds. Heartbroken, Casey vows to find the monster who would hunt Charlie down like this. Interviewing Charlie's distraught mother, Casey's blood turns to ice when she learns about a tightknit group of Charlie's best friends who once called themselves The Sunflower Girls. They met in archery club and have drifted apart since high school. Casey knows the killer is sending a message with arrows... But as Casey instructs her colleagues to track down the five remaining friends, , shot with arrows in her own home. Clutched in her hand is a broken sunflower petal. Turning the house upside down Casey finds a bone-chilling, one-word note: Someone is picking off The Sunflower Girls one by one. But why? Interviewing the four remaining girls, Casey is certain they are hiding a dark secret that stretches back to their school days. Trusting no-one, Casey will have to risk everything to track down a deadly killer... but " This was ... ... My heart and head . It was ... I shed a few tears... ." , ⭐⭐⭐⭐⭐ ... I whilst reading... just so well-written and it and it ... Really +." Goodreads reviewer, ⭐⭐⭐⭐⭐ ... plenty of moments... and finally turned the last page in the wee hours. " NetGalley reviewer, ⭐⭐⭐⭐⭐ ... really , one minute I was , the next I had ... I can't wait for the next instalment." Goodreads reviewer, ⭐⭐⭐⭐⭐