Shawn is called away to the East Coast to deal with a problem from his past that he didn't even know about. Psych and Once Upon A Time Crossover. Spoilers through season six for Psych and spoilers through "Broken" for Once Upon A Time. I figured that I would write this before we find out who Henry Mills father actually is on Once... Don't own Once Upon A Time or Psych.

When Katherine goes missing, Emma hires Shawn and Gus to come down and investigate. Will they find her? Will new couples arise? Find out in The Case of the Missing Katherine! Crossover between Once Upon a Time and Psych. Don't need to have seen both shows