'Supergirl' Cast, Update: The Final Hero Will Be Joining the Three Show Crossover

The CW have already been advertising four-series of crossover between DC Comics properties. CW's crossover will start of the midseason finale of "Supergirl" and the coninuation mostly of the wek on 'The Flash,' 'Arrow,' and 'Legends of Tomorrow.' It is perfectly explainable why Supergirl is involve in three heroes episodes that will be aired this week. Read More »