The Flash 7x03 "Mother" Season 7 Episode 3 Promo trailer HD - SUE DEARBON RETURNS - As Eva (guest star Efrat Dor) becomes more powerful, Barry (Grant Gustin) and team must find a way to stop her. They are shocked when an old friend - Sue Dearbon (guest star Natalie Dreyfuss) risks her life to help. David McWhirter directed the episode written by Eric Wallace & Kristen Kim (703). Original airdate 3/16/2021.