IN REVIEW: MACGYVER: SEASON 4 – Code + Artemis + Nuclear + N3mesis

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

Synopsis: 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.

The Story

Still dealing with the loss of his father. MacGyver and his team have to leap into action when the cities power grid is taken hostage by a mysterious hacker, but when it is revealed to be some code that Riley wrote years ago before she went to Prison. It falls upon Riley to dig into her past and chase down her old friends to try and stop things from escalating, but when Riley manages to turn the lights back on. The team has a new issue to resolve when the hacker that they are up against takes over a nuclear power plant. This means Riley and Desi have to track the hacker down while Mac and Russ Tyler try to find ways to slow the power plant from going into meltdown.


The Acting

Tristin Mays gets a lot to do in this episode as we see Riley struggle to outthink the hackers she is up against, which just happen to be her old friends from before she went to prison. The flashback scenes to the days when Riley was part of a small group of White Hat Hackers were quite effective in showing us just how far Riley has come since she was rescued by MacGyver and the Pheonix Foundation. Holly Deveaux and Sea Shimooka put in pretty solid performances as Riley’s old friends and fellow hackers Peyton and Kai.

Also pretty solid this week was Lucas Till as MacGyver who despite being kept busy is still struggling with the tragic loss and is seeing conspiracies everywhere. There’s a great scene between Mac and Russ when Mac feels that the hack is part of something that Codex has cooked up. Russ who is played brilliantly by Henry Ian Cusick tries to calm Mac down by pointing out that his emotional state could well be blinding him to the fact that it could well be a different group of terrorists or just a greedy hacker after a big payday. This scene is paid off later on when Mac and Russ watch a video message left by Mac’s father.



An enjoyable episode, which digs into a part of Riley’s past that we have not seen dealt with all that much on the series. I liked how we got to see Riley on the ropes this week because we’ve never really seen her tested this much in previous episodes. I also liked the final message that is left for Mac, which will likely impact things when we next see the team go head to head again with Titan and Codex.

Also fun was the way in which MacGyver utilized a Jetski and some hosepipes in order to build a pumping system to help keep the nuclear reactor cook and buy some time for Riley and Desi to fulfill their part of the mission.

MACGYVER: SEASON 4 – Code + Artemis + Nuclear + N3mesis
  • Story
  • Acting
  • CGI & Stunts
  • Incidental Music

Ian Cullen is the founder of and has been a fan of science fiction and fantasy from birth. In the past few years he has written for 'Star Trek' Magazine as well as interviewed numerous comics writers, television producers and actors for the SFP-NOW podcast at: When he is not writing for Ian enjoys playing his guitar, studying music, watching movies and reading his comics. Ian is both the founder and owner of You can contact ian at:
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