premise: Stephen Moyer worked with Ron Perlman as his co-star in Prince Valiant.
hypothesis: Prince Valiant is a 1997 Irish-British independent sword and sorcery film directed by Anthony Hickox , written by Michael Frost Beckner , and starring Stephen Moyer , Katherine Heigl , Thomas Kretschmann , Joanna Lumley , Ron Perlman , and Edward Fox . Stephen Moyer . In 1997 , Moyer made his big-screen debut landing the lead role in the film adaptation of the long-running comic strip Prince Valiant by Hal Foster , working alongside Ron Perlman and Katherine Heigl .