Worthington joins Riders movie?

Sam Worthington is set to play a man searching for his missing wife in a new movie.

The Avatar actor joins Charles Dance and Timothy Spall in drama-thriller The Riders, according to Moviehole.net.

The film - based on author Tim Winton's novel - will follow a couple who head to Ireland to start a new life.

The husband's life is turned upside down when he goes to collect his wife and child from the airport, and discovers his daughter is there alone and his wife is nowhere to be seen.

So far it's not known who else has been cast in director Robert Connolly's film.

The Riders is due to be released in 2014.