Who's Sam Tyler's daddy?

Fans of Life on Mars are about to find out.

In an upcoming episode of the ABC drama, Sam will come face to face with his father.

"[Sam is] starting to discover things from his past, things about his family. He's starting to realize that there might be a reason for it being 1973 of all years," said star Jason O'Mara.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.