The Surprising Case of Brian Timmons by Marshal Tenner Winter

You listen to the old broad on the other end of the phone as she finishes her plight. "Brian has gone insane. I've had to have him committed.", she tells you. You haven't seen Brian Timmons in several years and now his distraught mother has called you to ask for help. Luckily, you're a private eye, so this kind of sh*t is right up your alley.