After her husband's big promotion, Cece Solarin arrives in Brighton with their three children, ready to start afresh. But their new neighbourhood has a deadly secret. Three weeks earlier, Yvonne, a popular parent, was almost murdered in the grounds of the local school - the same school where Cece has enrolled her children.

When she meets three other mothers who welcome her into their circle, Cece begins to feel more comfortable in her new world. That is until she learns the police believe one of her new friends tried to murder Yvonne. One of these women has a secret.

And it is a secret they will kill to keep. . .