Killing Helen

Starting an affair with Robert is easy. Bored with the awkward, boorish single men of her own age and flattered by the confident attentions of a handsome stranger, Harriet is excited by the idea of a lustful friendship, as Robert chooses to describe it.

A commitment-free fling is ideal, and the existence of a wife is a minor inconvenience.

But then Harriet finds out about his other mistress...