'Margot Hunt's cleverly constructed thriller kept me guessing till the very end.' Peter Swanson

It was the perfect marriage - until everything went perfectly wrong...

On their first date back in law school, Natalie and Will Clarke bonded over drinks, dinner and whether they could get away with murder. Now married, they'll put the latter to the test when an unchecked danger in their community places their son in jeopardy. Working as a criminal defense attorney, Nat refuses to rely on the broken legal system to keep her family safe. She knows that if you want justice...you have to get it yourself.

Shocked to discover Nat's taken matters into her own hands, Will has no choice but to dirty his, also. His family is in way too deep to back down now. He's just not sure he recognizes the woman he married. Nat's always been fiercely protective, but never this ruthless or calculating. With the police poking holes in their airtight plan, what will be the first to fall apart: their scandalous secret - or their marriage?