Morgan Edge survives an attempt on his life and blames Lena Luthor — making him the prime suspect when Lena herself is attacked. Alex tries to help Sam find answers after she realizes that she is losing time.

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MORGAN EDGE THREATENS LENA

Someone tries to kill Morgan Edge (guest star Adrian Pasdar) and he barely survives. He accuses Lena (Katie McGrath) of being behind the attempt and vows to destroy her. When Lena fears her hatred for Morgan will take her to the Luthor dark side, Kara (Melissa Benoist) steps in to help her friend. Meanwhile, after Sam (Odette Annable) realizes she's losing time, she confides in Alex (Chyler Leigh) who decides to run some medical tests to see if she can find out what's going on with her new friend.

Tawnia McKiernan directed the episode with story by Robert Rovner and teleplay by Cindy Lichtman & Alix Sternberg (#312).