MacGyver 4x09 "Code + Artemis + Nuclear + N3mesis" Season 4 Episode 9 Promo trailer HD - While Mac’s friends surround him during his time of grief, Los Angeles’ power grid is taken hostage in a ransomware attack resulting in a citywide blackout, and the team discovers the code used was written by Riley years ago, on MACGYVER, Friday, April 10th on CBS. Tate Donovan returns as Oversight. <br /><br />MacGyver 4x09 Promo/Preview "Code + Artemis + Nuclear + N3mesis"<br />MacGyver Season 4 Episode 9 Promo<br />MacGyver 4x09 Promo "Code + Artemis + Nuclear + N3mesis" (HD)<br /><br />#MacGyver<br /><br />» Watch MacGyver Fridays at 8:00pm/7c on CBS<br />» Starring: Lucas Till, Levy Tran
