Retired Detective Bill Hodges now runs a two-person firm called Finders Keepers with his partner Holly Gibney. They met in the wake of the Mercedes Massacre, when a queue of people was run down by the diabolical killer Brady Hartsfield.
Brady is now confined to Room 217 of the Lakes Region Traumatic Brain Injury Clinic, in an unresponsive state. But all is not what it seems: the evidence suggests that Brady is somehow awake, and in possession of deadly new powers that allow him to wreak unimaginable havoc without ever leaving his hospital room.
When Bill and Holly are called to a suicide scene with ties to the Mercedes Massacre, they find themselves pulled into their most dangerous case yet, one that will put their lives at risk, as well as those of Bill's heroic young friend Jerome Robinson and his teenage sister, Barbara. Brady Hartsfield is back, and planning revenge not just on Hodges and his friends, but on an entire city.
The clock is ticking in unexpected ways...
The Bill Hodges trilogy that began with the Edgar Award-winning Mr Mercedes and continued in last year's fearsome Finders Keepers comes to an uncharacteristically concise close in End of Watch, a finale which finds Stephen King's determined old det-ret racing against the clock to get to the bottom of a string of suicides he thinks could be linked to the malignant mind behind the Mercedes Massacre:
On a foggy morning in 2009, a maniac named Brady Hartsfield drove a stolen Mercedes Benz into a crowd of job-seekers at City Center, downtown. He killed eight and seriously injured fifteen. [...] Martine Stover had been the toughest [survivor] to talk to, and not only because her disfigured mouth made her all but impossible to understand for anyone except her mother. Stover was paralysed from the chest down. (p.16)
The adjustment has been damned difficult, but in the seven years since the incident, Martine has come to terms with her limited mobility. She and her mother, who stepped up to the plate in the wake of that darkest of dates, have grown closer than ever before. They've been, by all accounts, happy—hard as that might for some outsiders to imagine—and happy people don't force overdoses on their dearly beloved daughters then takes cannisters of gas into the bath, do they?
Because of Hodges' history with Hartsfield, he and his recalcitrant partner Holly Gibney are, as a courtesy, invited to see the scene of what the police are keen to call a murder-suicide, and although the evidence in support of that theory is clear, when our PIs find a Zappit—a budget-brand tablet Hodges has seen the object of his obsession play with in the past—they can't help but suspect a connection.
But how could Mr Mercedes be involved in the deaths of Martine Stover and Janice Ellerton when he's basically brain-dead himself?