After a popular Bath teen's murder, police detective Zoe Benedict looks beyond the usual motives to solve the crime; while her divorced sister, Sally, takes a housekeeping job for a wealthy entrepreneur who behaves in increasingly suspicious ways.

"In a quiet residential area in London, a couple is discovered bound and imprisoned in their own home. Savagely battered and severely dehydrated, the worst revelation is yet to come: their eight-year-old son has been abducted. But when the body is found and forensic evidence turns the case on its head, revealing disturbing parallels to events in Detective Caffery's own past, he realizes he's dealing with much more sinister forces than he'd anticipated—and...