Lucas Till Angus "Mac" MacGyver Actor George Eads Jack Dalton Actor Justin Hires Wilt Bozer Actor Tristin Mays Riley Davis Actor Meredith Eaton Matty Webber Actor Isabel Lucas Samantha Cage Actor Michael Des Barres Nicholas Helman Guest Star David Dastmalchian Murdoc Guest Star Michael Michele Diane Guest Star Anthony Starke Henry Fletcher Guest Star Kate Bond Jill Guest Star Brady Bond Cassian Guest Star Parker Wierling Teenage Geek Guest Star Paul Downs Colaizzo Executive Producer Brett Mahoney Executive Producer David Von Ancken Executive Producer Henry Winkler Executive Producer Lee David Zlotoff Executive Producer Craig S O'Neill Executive Producer Marqui Jackson Writer Stephen Herek Director