'I'm an only child.' Or so Kate Seton thinks until she discovers that she has a sister.

Two years before Kate was born, her mother had left her first baby, Emma, in her pram outside a dress shop. When she came out, the baby was gone. Now, twelve years later, a girl appears on the Setons' doorstep with a note claiming that she is Emma. She has come home not the cuddly baby Kate has always wanted but a thin, spiky teenager with hard eyes. But is she Emma?

A gripping psychological thriller from bestselling author Vivien Alcock.

Carole Hayman has published several novels, and also writes for radio, television and film. She is well-known as co-writer of the Radio 4 hit series Ladies of Letters, and her first film as producer/writer, f2point8, was shortlisted for a BAFTA.