In our second clip from tonight's Supergirl, we get to see a showdown between Supergirl (Melissa Benoist) and the new psychic villain Psi (Yael Grobglas) With no defense against mental attacks, Supergirl is vulnerable but J'onn J'onzz (David Harewood) tries to help out with less than stellar results. If Grobglas looks familiar, she's been on[...]
