Tonight on the CW Network ‘Smallville’ (8/7c) returns with a new episode that begins the countdown to the series finale.

In the episode “Kent”, Clark is shocked to find a mirror box in the barn. Clark Luthor surprises him and sends Clark Kent back to the alternate reality where Clark runs into a very angry Jonathan Kent. Meanwhile, back in our reality, Clark Luthor visits Tess and tells her if she doesn’t side with him he’ll kill her. Lois asks Emil to help her bring Clark back.

Also on the CW Network, ‘Supernatural’ (9/8c) returns with a new episode that moves the series towards the end of this season.

Tonights episode is “My Heart Will Go On”. After Balthazar changes history and keeps the Titanic from sinking, Fate intervenes and begins killing those that would have died on the ship. Castiel tells Sam and Dean that Fate is very upset with the two of them and the only way they can stay alive is to kill her.

Check out the promos here: