Who are you ...? - Elizabeth Forbes

Alex, an officer in an elite regiment, returns from Afghanistan a changed man. He has left the army behind and is attempting to forge a civilian career as a security advisor. His wife Juliet is delighted. She, Alex and their son, Ben, now live in a well-appointed house in a leafy London suburb. But Juliet is no angel and often antagonises her husband as revenge for the sexual humiliation and violence that has become routine. Research on the internet suggests that Alex is suffering from PTSD but he won't seek help but her plan to help starts a dangerous chain of events.