Kathleen also shared that "the guy was writing to him from prison." Related: Family Ties cast: Where are they now? Bonsall was cast on the NBC sitcom in its fifth season, when he was four years old.

A law school student and her friends, set out to prove her brother's innocence but the only way to clear his name is by finding the real killer.

Kathleen also shared that "the guy was writing to him from prison." Related: Family Ties cast: Where are they now? Bonsall was cast on the NBC sitcom in its fifth season, when he was four years old.