Sherlock Holmes is the greatest detective in literary history. For the first time since the death of Sir Arthur Conan Doyle, a new Holmes story has been sanctioned by his estate, whetting the appetites of fans everywhere. Information about the book will be revealed as deliberately as Holmes himself would unravel a knotty case, but bestselling novelist and Holmes expert Anthony Horowitz is sure to bring a compelling, atmospheric story to life.

Forensic genealogist Rowan Healy has made a name for herself by helping investigators trace the family trees of violent criminals who have eluded justice for years. But the pressure of police cases left her burned out, and she’s shifted her focus to helping adoptees find their biological parents.

Former spy Maggie Bird came to the seaside village of Purity, Maine, eager to put the past behind her after a mission went tragically wrong. These days, she’s living quietly on her chicken farm, still wary of blowback from the events that forced her early retirement. But when a body turns up in Maggie’s driveway, she knows it’s a message from former foes who haven’t forgotten her. Maggie turns to her local circle of old friends—all retirees from the CIA—to help uncover the truth about who is trying to kill her, and why.

At the end of her first unsuccessful season out in society, Lady Georgiana has all but given up on attracting a suitable man - until she receives an invitation to a masked Halloween ball at Broxley Manor. Georgie is uncertain why she was invited, until she learns that the royal family intends to marry her off to a foreign prince, one reputed to be mad.

Miss Marple encounters a compelling murder mystery in the sleepy little village of St. Mary Mead, where under the seemingly peaceful exterior of an English country village lurks intrigue, guilt, deception and death. Colonel Protheroe, local magistrate and overbearing land-owner is the most detested man in the village. Everyone—even in the vicar—wishes he were dead. And very soon he is—shot in the head in the vicar's own study. Faced with a surfeit of suspects, only the inscrutable Miss Marple can unravel the tangled web of clues that will lead to the unmasking of the killer.