Maggie (guest star Floriana Lima) attempts to help Winn but old loyalties get in the way.
“A new villain (guest star Teri Hatcher) comes to National City, putting Supergirl (Melissa Benoist) on high alert.
Meanwhile, Winn’s (Jeremy Jordan) girlfriend, Lyra (guest star Tamzin Merchant), gets Winn in trouble with the law.
Following the promo for the upcoming musical crossover from last night, The CW has released the full trailer for the next episode of Supergirl which you can find in the player below!