In the MacGyver episode “Mac + Fallout + Jack”, Mac (Lucas Till) and Jack (George Eads) hit the road for a weekend of relaxation in Las Vegas, but their mini-vacation is cut short when someone from their past (Waller, portrayed by Doug Savant) abducts them and locks them in a concrete fallout room. Incarcerated there they meet and team up with a man named Griggs to escape.
Griggs on MacGyver is portrayed by actor Seamus Dever, who’s best known for his roles as NYPD Detective Kevin Ryan (SEE LINK ABOVE) on Castle, Dr. Chris Ferlinghetti on Army Wives, and Dr. Ian Devlin on the daytime soap opera General Hospital. BTW: crazy guy abductor Waller is portrayed by Doug Savant, who’s best known for his roles on Desperate Housewives (Tom Scavo), Melrose Place (Matt Fielding), and Knots Landing (Young Mack MacKenzie), among others. MacGyver airs Fridays at 8 pm on CBS, right before Hawaii Five-0.
— Carlos Bernard (@CBernardsbull) January 3, 2019