The Innocent by Harlan Coben
You never meant to kill him….One night, Matt Hunter innocently tried to break up a fight—and ended up a killer. Now, nine years later, he’s an ex-con who takes nothing for granted. His wife, Olivia, is pregnant, and the two of them are closing on their dream house. But all it will take is one shocking, inexplicable call from Olivia’s phone to shatter Matt’s life a second time….
An electrifying thrill ride of a novel that peeks behind the white picket fences of suburbia, The Innocent is at once a twisting, turning, emotionally charged story and a compelling tale of the choices we make and the repercussions that never leave.