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The Martian Chronicles
Armek, a White Martian, descends on National City intent on taking M’gann back to Mars to face her punishment as a traitor. Hank and Supergirl determine the best way to keep M’gann safe is to bring her to the DEO. However, when it is revealed that Armek shape-shifted into M’gann and is now loose in the building, the team realize he could be disguised as any one of them.
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![](https://image.tmdb.org/t/p/w300/2qou2R47XZ1N6SlqGZcoCHDyEhN.jpg)
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Other episodes for this season
![The Adventures of Supergirl](https://image.tmdb.org/t/p/w300/8OrNPwjmi3V6er2PvdtBQEy5YJu.jpg)
![The Last Children of Krypton](https://image.tmdb.org/t/p/w300/8rjtI2WOY3HD55E1mUv1X3o1vHR.jpg)
![Welcome to Earth](https://image.tmdb.org/t/p/w300/kW74ZQMbhtShHbKns811MVOWba0.jpg)
![Survivors](https://image.tmdb.org/t/p/w300/g4U7rfbIJIx39jldrL3qpv8k8QY.jpg)
![Crossfire](https://image.tmdb.org/t/p/w300/8b5jBxhf9CIVNWhCwn1kFW3BoST.jpg)
![Changing](https://image.tmdb.org/t/p/w300/r26Ah9bkfhwjMcywctCEoYkMtyI.jpg)
![The Darkest Places](https://image.tmdb.org/t/p/w300/aaFEI7iEVom8fx6Za4KnCFn8Qn8.jpg)
![Medusa (I)](https://image.tmdb.org/t/p/w300/qwXv7sF1TL8b76otxzLtlbsBux3.jpg)
![Supergirl Lives](https://image.tmdb.org/t/p/w300/yijh9yvnAUWtMhYE6i3gVRHTyvQ.jpg)
![We Can Be Heroes](https://image.tmdb.org/t/p/w300/miJROofZeyPLt67YTTo4oYRDAyh.jpg)
![The Martian Chronicles](https://image.tmdb.org/t/p/w300/bNSvRaDWf41SVJMvAiXdJgqUa6D.jpg)
![Luthors](https://image.tmdb.org/t/p/w300/gRD7sp4DHoyH7nXGvicz54hM8vs.jpg)
![Mr. & Mrs. Mxyzptlk](https://image.tmdb.org/t/p/w300/cYyqcy2aU1KLehusR6kNwkIBqEv.jpg)
![Homecoming](https://image.tmdb.org/t/p/w300/wxR12C4pZAumbZDCjnRotS5Kwid.jpg)
![Exodus](https://image.tmdb.org/t/p/w300/d2Z55Gr6aYIrxnYipulAHQLRA32.jpg)
![Star-Crossed (I)](https://image.tmdb.org/t/p/w300/oQnf3VnpueLImlOkadqdC25RuHQ.jpg)
![Distant Sun](https://image.tmdb.org/t/p/w300/hYkXtRNhtrj9Q7AkvuVxWCNsuRJ.jpg)
![Ace Reporter](https://image.tmdb.org/t/p/w300/jQTkH1GNnPs7bcaGh0DvH7RMuVF.jpg)
![Alex](https://image.tmdb.org/t/p/w300/gtCqowXKJKD7d9GUoN9z2V5hgWU.jpg)
![City of Lost Children](https://image.tmdb.org/t/p/w300/bS0jNdG9NB3DyNQryp4i5OERuwc.jpg)
![Resist](https://image.tmdb.org/t/p/w300/AgDCdXOL1aSw5Zm4hISy8wJV3F4.jpg)
![Nevertheless, She Persisted](https://image.tmdb.org/t/p/w300/1gucSemEaVASocbi0BiAMHMElEd.jpg)