Supergirl
S02E11 The Martian Chronicles
Title: The Martian Chronicles Plot: Armek, a White Martian, arrives in National City with the goal of returning M’gann to Mars to stand trial for her betrayal. To protect her, Hank and Supergirl decide that the safest place for M’gann is the DEO. However, chaos ensues when they discover that Armek has transformed into M’gann and is now roaming freely within the facility. The team quickly understands that he could be masquerading as any one of them, heightening the tension as they scramble to identify the real M’gann before it’s too late.
Season 2 Episodes
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The Adventures of Supergirl
The Last Children of Krypton
Welcome to Earth
Survivors
Crossfire
Changing
The Darkest Places
Medusa (I)
Supergirl Lives
We Can Be Heroes
The Martian Chronicles
Luthors
Mr. & Mrs. Mxyzptlk
Homecoming
Exodus
Star-Crossed (I)
Distant Sun
Ace Reporter
Alex
City of Lost Children
Resist
Nevertheless, She Persisted