 He was on stand by to replace Dirk Bogarde on "Song Without End" (1960) when Bogarde was clashing with the director.Schneer cast Mathews in an unofficial follow up to "The 7th Voyage of Sinbad", "The 3 Worlds of Gulliver" (1960), playing the title role, with effects by Harryhausen.Columbia then put him in a prestigious film, "The Devil at 4 O'Clock" (1961), billed underneath Frank Sinatra and Spencer Tracy.