The Split

British glaciologist Felicity Lloyd, the protagonist of this tightly plotted spellbinder from Mary Higgins Clark Award–winner Bolton (The Craftsman), has come to South Georgia, a remote island off Antarctica, to escape her husband, Freddie, who has been pursuing her since leaving prison, where he’d been serving time for murder. Flash back nine months to Cambridge, England, where Felicity is seeing therapist Joe Grant, who’s reeling from a divorce and a recent violent attack by a homeless woman. Joe strives to piece together the exact nature of Felicity’s relationship with the imprisoned Freddie. Frightening notes left in her desk, break-ins at her home, and fugue states with disastrous consequences for Felicity lead Joe to question his patient’s sanity. Eventually, Joe sets out for South Georgia to help Felicity, motivated in large part by the strong feelings he’s developed for her. Employing multiple narratives and complex character histories, Bolton keeps the reader guessing to the end. Psychological thriller fans will be satisfied. Agent: Anne-Marie Doulton, Ampersand Agency (U.K.). (Apr.)