No longer a trainee but a freshly-minted DC, Joseph Stark finds himself working a double homicide. Thomas and Mary Chase were shot dead in their London home, and first impressions are that this is a burglary-gone-bad. But Stark is unconvinced. Burglary-murders are usually a tragic case of unfortunate timing, but this feels like something else entirely. And when evidence arises to link this murder to a 20-year-old cold case, the hunt is well and truly on.