Summer is coming to an end and that only means one thing: the beginning of the fall TV season is only a few months away!

The stars of "The Flash," "Empire," "How to Get Away with Murder" and more have all headed back to work and are sharing their first moments on set with fans via Twitter and Instagram.

Check out our slideshow above for photos from across network TV and scroll below to see some fun videos with the stars of your favorite shows.

"Supergirl"

"iZombie"

"Madam Secretary"

"Criminal Minds"