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To save the city from a new threat (Heat Monger), the team works with Killer Frost , who returns to S.T.A.R. Labs because Savitar's memory loss makes him useless to her. Barry’s memories are ultimately restored when Iris recounts the emotional story of the night his mother died. Key Character Developments

Because Barry loses his memory, Savitar also loses his, rendering him a non-threat temporarily. However, this also causes Wally West to lose his powers, as his speed was a direct result of Savitar's actions in the timeline. The_Flash_2014_3x21_Causa_Ed_Effetto_ITA_1080p_...

The plan goes awry, causing Barry to lose his entire memory. He begins going by the name "Bart" . To save the city from a new threat

The two share a kiss that helps Tracy finalize the design for the "Speed Force Bazooka". Episode Details Season/Episode: Season 3, Episode 21 Original Air Date: May 9, 2017 Writers: Judalina Neira & Lauren Certo Director: David McWhirter Key Character Developments Because Barry loses his memory,