Tonight, “Supergirl” kicked off its midseason finale with nary a mention of Barry Allen and the crossover that was coming. If you watched it live because of all the promotion, odds are you were slamming your head against the wall about halfway through the episode when there was nary a mention of The Flash or … Continue reading ‘Supergirl’ season 2, episode 8 review: Who’s hunting Mon-El, Maggie and Alex, and a crossover’s birth