The Task force believes the Bay Harbor Butcher case is closed, but Dexter still has some trouble to deal with.

Mort Goldman accidentally steps into a time machine and winds up in 1939 Poland in the middle of the Nazi invasion. Brian and Stewie follow him to Nazi Germany in an attempt to save him and bring him back to the present safely.

Marshall takes Robin to a bar with a Minnesota theme. Ted attempts to keep his visiting sister away from Barney.

Wendy and The Middleman work to contain a trout-eating zombie outbreak. Writer: Andy Reaser Director: Allan Kroeker Guest star: Sherry Mattson (!!!! Promo Girl), Tina Joy Manera (!!!! Promo Girl), Melanie Hawkins (Bonnie Blue), Timothy Josefy (Fishmonger), Joshua Levine (Dave), Michele Nordin (Heidi), Drew Tyler Bell (Pip), Al Damji (Rod Argent), Todd Stashwick (Head Guard/Mr. White), George Williams (Deputy Commissioner) Wendy and The Middleman work to contain a trout-eating zombie outbreak. Writer: Andy Reaser Director: Allan Kroeker Guest star: Sherry Mattson (!!!! Promo Girl), Tina Joy Manera ...

After passing Zara and Ching's tests, Clark learns that they want him to leave the Earth (and Lois) and go back with them to rule New Krypton. If he refuses, the planet will be ruled by the evil Lord Nor, who sends an assassin to kill Clark before that can happen. When Clark defeats the assassin, he and Lois decide that he must go with Zara and Ching. Clark says goodbye to his parents, to Earth and to Lois, and leaves with Zara and Ching.

Dexter follows clues left for him by the Ice-Truck Killer in an attempt to find the hostage. Paul tries to convince Rita that she and the children are not safe around Dexter.