When one of Cassie Swann's bridge partners, Naomi Harris, dies from an overdose, she is shocked but not suspicious.
But things look rather different with the appearance of a young woman claiming to be Naomi's daughter, given up for adoption twenty years earlier, and a secret lover who insists that Naomi was murdered by her husband.
Guiltily aware that she was not a good friend to Naomi while she was alive, Cassie decides to try to find the truth - and soon discovers that while Naomi had little reason to kill herself, there are several reasons why someone might have wanted her dead.
Complications in her own life don't make things any easier. Torn between DS Paul Walsh and the persistent attentions of Charlie Quartermain, she suddenly finds a menacing figure is stalking her. As she closes in on the mystery of Naomi's troubled life, she is about to discover some very dangerous secrets.