Shawn and Gus crash a search party for a missing billionaire whose plane went down in the California woods. Shawn uses his fake psychic intuition (and a super-secret map) to find the plane. Inside, the billionaire asks him to find his killers.

For the Psych season finale, Shawn and Gus match wits with Santa Barbara’s infamous serial killer, the Ying-Yang killer. Mr. Yang has sent a threat to SBPD, requesting that Shawn track him down, and Shawn reluctantly accepts.