Some secrets are worth killing for.

In an upscale Bel Air property, two lovers are found dead in a swimming pool. The man is the playboy heir to a business empire, and the woman is his even wealthier married neighbour.

An illicit affair is the perfect motive. But the house is untouched - no forced entry, no forensic evidence - and so LAPD homicide lieutenant Milo Sturgis and asks psychologist Alex Delaware to help unpick the case.

It quickly becomes clear that both victims had troubled pasts. Now Alex and Milo must confront LA's darkest side as they unravel a trail of deadly secrets . . .