Two teenagers, Shockley and Goddard, come to the Psych office to hire Shawn and Gus for a case. They need help and the police won't take them seriously since they are kids. One of their teachers at the Meitner School for gifted students has killed someone and in two days, he'll kill again. The problem is, they don't know which teacher it is, who he killed or who his next victim will be. When they broke into school late one night to pull a prank, they accidentally hacked into a cell phone call being made from the campus. The only other information they could get is that the killer has a deep voice and a cousin named Muriel.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
Two students (Jeffrey Tedmori and Calum Worthy ) at a school for the gifted suspect a teacher of murder, leading Shawn and Gus to go undercover as lecturers on "Phsysics: The Physics of Psychics" in order to discover the truth. Coincidentally, both O'Hara - acting as the primary detective for the first time - and Lassiter are looking into the case as well. For Gus, the case is somewhat personal, as he intends to find out why he didn't get into the school.