<Tr> <Td_colspan="8"> <P> Vandal Savage arrives in Central City, seeking to kill Kendra . Barry goes to Star City and enlists the help of Oliver and his team to protect her . The team is visited by Malcolm who informs them that Savage is an immortal . Later, Kendra is kidnapped by Hawkman, but Barry and Oliver rescue her and capture Hawkman, who introducing himself as Carter Hall, tells them he and Kendra are soulmates who have been connected for millennia . The pair are destined to die, be reborn, and find each other in each lifetime . Carter also reveals that Savage has killed the pair several times, each time growing stronger . Savage acquires the Staff of Horus, a deadly weapon . Kendra unlocks her abilities and the team decides to regroup in Central City, where Oliver witnesses Samantha Clayton with her son, who is also his . Meanwhile, Caitlin and Harry create a serum that will temporarily increase Barry's speed so that he can defeat Zoom . Jay initially refuses to test the serum, but changes his mind to save Harry when the latter is shot by an unaware Patty, whom Joe later informs about the truth . However, Jay advises against using the serum on Barry . </P> This episode begins a crossover that concludes on Arrow season 4 episode 8 . The two episodes also set up Legends of Tomorrow . </Td> </Tr> <P> Vandal Savage arrives in Central City, seeking to kill Kendra . Barry goes to Star City and enlists the help of Oliver and his team to protect her . The team is visited by Malcolm who informs them that Savage is an immortal . Later, Kendra is kidnapped by Hawkman, but Barry and Oliver rescue her and capture Hawkman, who introducing himself as Carter Hall, tells them he and Kendra are soulmates who have been connected for millennia . The pair are destined to die, be reborn, and find each other in each lifetime . Carter also reveals that Savage has killed the pair several times, each time growing stronger . Savage acquires the Staff of Horus, a deadly weapon . Kendra unlocks her abilities and the team decides to regroup in Central City, where Oliver witnesses Samantha Clayton with her son, who is also his . Meanwhile, Caitlin and Harry create a serum that will temporarily increase Barry's speed so that he can defeat Zoom . Jay initially refuses to test the serum, but changes his mind to save Harry when the latter is shot by an unaware Patty, whom Joe later informs about the truth . However, Jay advises against using the serum on Barry . </P> <Tr> <Th> 32 </Th> <Td> 9 </Td> <Td> "Running to Stand Still" </Td> <Td> Kevin Tancharoen </Td> <Td> Andrew Kreisberg </Td> <Td> December 8, 2015 (2015 - 12 - 08) </Td> <Td> 3J5659 </Td> <Td> 3.55 </Td> </Tr> <Tr> <Td_colspan="8"> Mardon breaks James Jesse and Snart out of Iron Heights in an effort to team up to kill the Flash . Snart declines and alerts Barry . Jesse and Mardon place bombs hidden in Christmas gifts throughout the city, threatening to set them off in family homes if Barry does not sacrifice himself . Wells, Cisco, and Jay find one of the bombs and alter its magnetic polarity; they send it into one of the dimensional breaches, which causes it to attract the remaining bombs, removing them from the city . With them gone, Barry subdues Mardon and Jesse, dissuading Patty from killing Mardon . Meanwhile, Iris and Barry tell Joe about the latter's son named Wally, who later shows up at Joe's . Caitlin and Jay start a romantic relationship . Elsewhere, Zoom is revealed to be sending metahumans in order to help Barry get faster so that Zoom can take the latter's speed force, which Harry reluctantly agrees to help Zoom with because of his daughter, Jesse . </Td> </Tr>

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