<Tr> <Td_colspan="8"> Kara battles a powerful metahuman bank robber called Psi, who can evoke her victims' deepest fears, forcing Kara to struggle with her memories of Krypton's destruction and her guilt over Mon - El . After Winn's psychic dampener fails, Kara finally overcomes her fear and arrests Psi . Lena decides to run CatCo personally, taking James by surprise and creating friction with Kara, who initially has difficulty separating work and their friendship . Samantha Arias's daughter, Ruby, deliberately puts herself in danger to test whether her mother has superpowers; however, she is rescued by Kara . Samantha begins to question who she is and her origins, and becomes Lena's replacement at L - Corp, acting as its CFO . Alex learns that Maggie seems to not want children . J'onn receives a telepathic summons from M'gann, urging him to come to Mars immediately . </Td> </Tr> <Tr> <Th> 45 </Th> <Td> </Td> <Td> "Far From the Tree" </Td> <Td> Dermott Downs </Td> <Td> Jessica Queller & Derek Simon </Td> <Td> October 23, 2017 (2017 - 10 - 23) </Td> <Td> T13. 20653 </Td> <Td> 1.76 </Td> </Tr> <Tr> <Td_colspan="8"> J'onn tells Kara and Alex about M'gann's message, and she convinces him to take Kara for help . The two journey to Mars in his spaceship, encountering M'gann and the "resistance". They found J'onn's father, M'yrnn, who is being coerced into giving the White Martians the location of the Staff of Kolar, a psychic weapon that can defeat the resistance . J'onn rescues M'yrnn, who initially believes J'onn is a White Martian in disguise . Eventually, Kara convinces M'yrnn to let J'onn prove his identity . Having acquired the location, the resistance defeats White Martian operatives . The recovered staff is entrusted to J'onn, who returns to Earth with M'yrnn and Kara . Meanwhile, Eliza throws Alex and Maggie a bridal shower . Alex convinces Maggie to invite her father, who comes but still cannot tolerate her homosexuality . She tells him that she no longer needs him because she now has a family who accepts her . However, she confirms to Alex that she does not want children . </Td> </Tr> <Tr> <Th> 46 </Th> <Td> </Td> <Td> "The Faithful" </Td> <Td> Jesse Warn </Td> <Td> Paula Yoo & Katie Rose Rogers </Td> <Td> October 30, 2017 (2017 - 10 - 30) </Td> <Td> T13. 20654 </Td> <Td> 1.82 </Td> </Tr>

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