Showing Nothing But the Truth by John Lescroart

Can you ever know the truth about what's coming next? When Lawyer Dismas Hardy's wife fails to pick up their children from school one Thursday afternoon, he's convinced something terrible has happened. It has. His wife has been keeping a secret from him - for which she is prepared to go to jail. It's a secret that threatens their marriage...and their lives. For Dismas Hardy a harrowing journey has begun, a search that exposes one stunning revelation after another, about the secrets men and women hide from the law, from each other - and from themselves...