<Tr> <Th> 14 </Th> <Td> 14 </Td> <Td> "Fallout" </Td> <Td> Steve Surjik </Td> <Td> Keto Shimizu & Ben Sokolowski </Td> <Td> February 17, 2015 (2015 - 02 - 17) </Td> <Td> 3J5364 </Td> <Td> 4.01 </Td> </Tr> <Tr> <Td_colspan="8"> Barry and Caitlin find Ronnie and Stein alive and separated, which Eiling also finds out . Joe reveals his findings to Barry . Ronnie and Stein realize that their minds are partially connected . Wells visits Eiling, who reveals that he knows Barry's alter ego and demands the F.I.R.E.S.T.O.R.M. project . Wells gives up Stein, who is tortured by Eiling until Barry and Ronnie save him . Ronnie and Stein reunite by the tachyon piece to survive the military onslaught . The duo gains enough control to be able to merge and separate on command . They decide to leave Central City to stay ahead of Eiling and learn more about their new powers . As the Reverse - Flash, Wells kidnaps Eiling and brings him to the sewers . He reveals himself to Eiling, and allows Grodd, who is displaying psychic abilities, to drag Eiling deeper into the sewer . Meanwhile, Iris's colleague, Mason Bridge tells her his belief that Wells deliberately caused the S.T.A.R. Labs explosion . Iris suspects Caitlin's activities and decides to help Mason with his investigation . Barry tells Joe that he will travel back in time again to save Nora, but intends to succeed by learning the mistakes in his previous attempt . </Td> </Tr> <Tr> <Th> 15 </Th> <Td> 15 </Td> <Td> "Out of Time" </Td> <Td> Thor Freudenthal </Td> <Td> Todd Helbing & Aaron Helbing </Td> <Td> March 17, 2015 (2015 - 03 - 17) </Td> <Td> 3J5365 </Td> <Td> 3.69 </Td> </Tr> <Tr> <Td_colspan="8"> Mark Mardon, Clyde's brother, returns to Central City to avenge Clyde's death . Eddie and Linda get jealous of the intimacy between Barry and Iris . Mason shares his knowledge that Wells killed Stagg with Iris and Barry, who tells Caitlin and Cisco, who begins to believe Joe was right about Wells, so he rechecks the containment field that failed to hold the Reverse - Flash . Wells arrives and reveals himself to be Eobard Thawne, a relative of Eddie's and a man from the future who came back in time to kill Barry, and has since been stranded in the present day . Thawne also explains that he is pushing Barry to get stronger so that he can use Barry's powers to return to his time, and he murders Cisco to protect his secret . Mardon kidnaps Joe and forces him to watch as Mardon creates a tsunami in order to kill Iris . Barry reveals his secret identity to Iris, just after they admit to romantic feelings for each other, in order to save the city . Barry runs back and forth across the coastline to create a barrier against the tsunami, but he runs so fast that he travels back in time to the day before . </Td> </Tr>

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