The bestselling author of The Surgeon returns—and so does that chilling novel’s diabolical villain. Though held behind bars, Warren Hoyt still haunts a helpless city, seeming to bequeath his evil legacy to a student all-too-diligent . . . and all-too-deadly.THE APPRENTICEIt is a boiling hot Boston summer. Adding to the city’s woes is a series of shocking crimes, in which wealthy men are made to watch while their wives are brutalized. A sadistic demand that ends in abduction and death.The pattern suggests one man: serial killer Warren Hoyt, recently removed from the city’s streets. Police can only assume an acolyte is at large, a maniac basing his attacks on the twisted medical techniques of the madman he so admires. At least that’s what Detective Jane Rizzoli thinks.