<Tr> <Td_colspan="8"> In flashbacks, it is revealed that Joe became Barry's legal guardian but did not let him visit Henry in prison at the latter's request . Barry begins using his abilities to stop minor crimes and help citizens across the city while starting to develop debilitating side effects . While guiding Iris West, who seeks his help to do her school assignment, Barry witnesses a robbery by a crew of men, but passes out while trying to stop them . The S.T.A.R. Labs team determines that Barry becomes hypoglycemic from the use of his abilities due to a sped - up metabolism and needs to ingest more calories to maintain his energy level . The team eventually learns that there is actually one robber, Danton Black, who has the ability to create clones of himself . Black intends to kill his former employer Simon Stagg, who stole Black's cloning research . With encouragement from Joe, Barry goes after Black and successfully stops him . However, Black commits suicide . Afterward, Barry accepts Joe's help in the investigation of Nora's murder . Later, Wells visits Stagg, who has already become obsessed with the Flash and plans to exploit them as he did to Black . Wells then kills Stagg . </Td> </Tr> <Tr> <Th> </Th> <Td> </Td> <Td> "Things You Can't Outrun" </Td> <Td> Jesse Warn </Td> <Td> Alison Schapker & Grainne Godfree </Td> <Td> October 21, 2014 (2014 - 10 - 21) </Td> <Td> 3J5353 </Td> <Td> 3.59 </Td> </Tr> <Tr> <Td_colspan="8"> As the police investigate the murder of one of the city's crime families, Barry suspects that the killer may be a metahuman who can control poison gases . As Barry and Joe work to discover the killer's identity, Wells and his team work to retrofit the particle accelerator into a prison for metahumans where they can begin to find a way of reversing their mutations . This brings up difficult feelings and memories for Snow, whose fiancé, Ronnie Raymond, was killed by the explosion . The team identifies the killer as Kyle Nimbus, discovering that Nimbus does not control gases, but transforms his body into them . The team learns that Joe, the lead detective in the original case, is Nimbus' next target . Barry races to Iron Heights Prison to save Joe's life, forcing Nimbus to overexert himself so that he can apprehend him . The team locks Nimbus into a cell they have made . In a flashback to when the accelerator explodes, Wells is seen going into his hidden room and viewing a surveillance video of Barry getting struck by lightning in his lab . </Td> </Tr> <Tr> <Th> </Th> <Td> </Td> <Td> "Going Rogue" </Td> <Td> Glen Winter </Td> <Td> Geoff Johns & Kai Yu Wu </Td> <Td> October 28, 2014 (2014 - 10 - 28) </Td> <Td> 3J5354 </Td> <Td> 3.53 </Td> </Tr>

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