Beside Myself is a literary thriller about identical twins, Ellie and Helen, who swap places aged six. At first it is just a game, but then Ellie refuses to swap back. Forced into her new identity, Helen develops a host of behavioural problems, delinquency and chronic instability. With their lives diverging sharply, one twin headed for stardom and the other locked in a spiral of addiction and mental illness, how will the deception ever be uncovered? Exploring questions of identity, selfhood, and how other people's expectations affect human behaviour, this novel is as gripping as it is psychologically complex.