Seems it’s based on two books
Twenty two years prior to the novel's events, twelve year-old Adam and his two best friends failed to come home after playing in the familiar woods bordering their Irish housing estate. A search is organized and the Guard finds Adam shivering, clawing the bark of a nearby tree, with blood on his shoes and slash marks on his back. He is unable to tell them what happened or where his friends are.
The story follows the efforts of detective Cassie Maddox to determine the circumstances surrounding the death of Lexie Madison, a young woman who is her doppelgänger.[1] The dead woman not only resembles Cassie but also was living under an alias the detective used in an earlier undercover assignment. A senior police officer, Frank Mackey, convinces Cassie to impersonate the dead woman to investigate her death and to discover who she really was.
The story follows the efforts of detective Cassie Maddox to determine the circumstances surrounding the death of Lexie Madison, a young woman who is her doppelgänger.[1] The dead woman not only resembles Cassie but also was living under an alias the detective used in an earlier undercover assignment. A senior police officer, Frank Mackey, convinces Cassie to impersonate the dead woman to investigate her death and to discover who she really was.
The story follows the efforts of detective Cassie Maddox to determine the circumstances surrounding the death of Lexie Madison, a young woman who is her doppelgänger.[1] The dead woman not only resembles Cassie but also was living under an alias the detective used in an earlier undercover assignment. A senior police officer, Frank Mackey, convinces Cassie to impersonate the dead woman to investigate her death and to discover who she really was.