Three years after surviving a catastrophic flood (Will North's Water, Stone, Heart), twelve year old Lee Trelissick has settled into a safer life with her adoptive parents, Nicola and Andrew. But before long, preternaturally wise Lee announces, "Someone wants to do us harm. Someone evil."

She's right. A series of increasingly malicious events soon cast a pall over Trevega House and the surrounding village. Arson, poison, a nearly fatal cliffside attack—but no suspect. And finally, a murder. Can Detective Inspector Morgan Davies and her Scene of Crimes manager Calum West protect the strangely prescient girl and stop the killer before it's too late?