“Grey’s Anatomy” (8 p.m., ABC): Dr. Derek “McDreamy” Shepherd may be

“Grey’s Anatomy” (8 p.m., ABC): Dr. Derek “McDreamy” Shepherd may be gone, but there’s still plenty of drama percolating on “Grey’s Anatomy.” The show kicks off a new season of Shonda Rhimes’ “TGIF” shows, leading into “Scandal” and “How to Get Away With Murder.”

“Heroes Reborn” (8 p.m., NBC): Noah Bennett, aka H.R.G. (Jack Coleman), is one of several familiar faces who pop up in “Heroes Reborn.” It’s a reboot of the fleetingly popular series about people with extraordinary powers who are called upon to save the world.

Returning: “Grey’s Anatomy,” 8 p.m., ABC; “Scandal,” 9 p.m., ABC; “The Blacklist,” 9 p.m., NBC; “How to Get Away with Murder,” 10 p.m., ABC.

TV listings, B6