Desi and Russ try to stop Codex on MacGyver. "Save + The + Dam + World" is the 13th episode of the show's fourth season.

Aunt Gwen comes to visit on MacGyver. "Loyalty + Family + Rogue + Hellfire" is the 12th episode of the show's fourth season.

Mac is placed in a fake prison cell on MacGyver. "Psy-Op + Cell + Merchant + Birds" is the 11th episode of the show's fourth season.

Mac is put into a dream state to help him remember on MacGyver. "Tesla + Bell + Edison + Mac" is the tenth episode of the show's fourth season.

Mac grieves a loss on MacGyver. "Code + Artemis + Nuclear + N3mesis" is the ninth episode of the show's fourth season.

Oversight recruits Mac to help him find the suspected bomber, Mason on MacGyver. "Father + Son + Father + Matriarch" is the eighth episode of the show's fourth season.

Desi and Mac's date turns to chaos when they witness a murder on MacGyver. "Mac + Desi + Riley + Aubrey" is the seventh episode of the show's fourth season.

The Phoenix team goes on a rescue mission on MacGyver. "Right + Wrong + Both + Neither" is the sixth episode of the show's fourth season.

Desi goes undercover as a soccer player on MacGyver. "Soccer + Desi + Merchant + Titan" is the fifth episode of the show's fourth season.

Mac discovers an undetonated WWII bomb on MacGyver. "Windmill + Acetone + Celluloid + Firing Pin" is the fourth episode of the show's fourth season.

Mac and the team are on a plane when their pilot has a heart attack on MacGyver. "Kid + Plane + Cable + Truck" is the third episode of the show's fourth season.

Mac is hired to steal a highly classified project on MacGyver. "Red Cell + Quantum + Cold + Committed" is the second episode of the show's fourth season.