For all the superhero fans, you wouldn’t wanna miss the biggest crossover event on TV this week. DC Comics and The CW will give you an unprecedented event, by overarching one story accross 4 different superhero series. It will start on Monday with Supergirl, continues on Tuesday with The Flash, Wednesday with Arrow and Thursday with DC’s Legends of Tomorrow. The events rotate around the superhero cast from the 4 different series, teaming up to fight off dangerous alien invaders…