NEW YORK TIMES BESTSELLER • The second installment of the award-winning Detective D. D. Warren series from #1 New York Times bestselling author Lisa Gardner.

There's no use locking the doors. . . .

It was the case that nearly killed him. Now a gruesome discovery in an underground chamber is about to resurrect his worst nightmare. And Massachusetts State Police detective Bobby Dodge has only one lead: a young girl who's been in hiding for as long as she can remember.

There's no use turning on the light. . . .

Her childhood was a blur of new cities and assumed identities. But from whom—or what—was Annabelle Granger's family hiding? To find out, Dodge must team up with former lover and partner D. D. Warren from the Boston P.D. to track a woman from Bobby's past who's every bit as dangerous as the new killer. The trail will lead them to a chilling place where there's no one to trust . . . and no place left to hide.

The killer knows where to find you.