WHILE MAC PARTICIPATES IN A CHALLENGE TO CREATE AUTONOMOUS COMBAT MACHINES, HE MUST HELP HIS BIGGEST COMPETITOR WHEN HER VEHICLE IS HACKED AND HEADS FOR THE PENTAGON, ON "MACGYVER," FRIDAY, JAN. 12

Ashley Tisdale Guest Stars as Allie, a CIA Operative, Mac's Former Fling and His Biggest Competitor in the Challenge

"CO2 Sensor + Tree Branch" - While Mac participates in a challenge for government operatives to create robotic combat machines, Mac must help his biggest competitor, Allie (Ashley Tisdale)
, when her vehicle is hacked and heads to the Pentagon. Also, Jack attends his high school reunion, hoping for a showdown with his old rival who beat him out for homecoming king, on MACGYVER, Friday, Jan. 12 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Ashley Tisdale guest stars as Allie, a CIA operative, Mac's former fling and his biggest competitor in the Challenge.

REGULAR CAST:

Lucas Till (Angus "Mac" MacGyver)
George Eads (Jack Dalton)
Justin Hires (Wilt Bozer)
Tristin Mays (Riley Davis)
Meredith Eaton (Matty Webber)
Isabel Lucas (Samantha Cage)

GUEST CAST:

Ashley Tisdale (Allie)
Kate Bond (Jill)
Eddie McClintock (Jimmy)
Jane Rumbaua (Tina Pham)
Fidelus Singleton (Oscar)
Kevin Patrick Murphy (Martin Chapman)
Juan Piedrahita (Bellman)
Michael Rubino (Ahmed)
Brian Brightman (Official)
Thom Scott II (Blake)
Dominique Mari (Bride)
Phillip Mullings Jr. (Groom)

STORY BY: Timothy J. Lea

TELEPLAY BY: Adam Beechen

DIRECTED BY: Brad Turner