Bad Dads

In January of 1983, a man abandons his pregnant wife. In February, the wife gives birth to a set of twins. Thirty-two years later, on of the twins is murdered while attempting to locate the wayward father. Who would kill this man?The footloose father?The sleazy lawyer?The twin's ex-wife?The best friend?The religious cult leader?The distinguished professor?All of the above?None of the above?