|If You're So Smart, Then Why Are You Dead?|
|Air Date||August 24, 2007|
|Written by||Anupam Nigam|
|Directed by||Arlene Sanford|
|Guests|| Jeffrey Tedmori|
|Previous episode||"Meat Is Murder, But Murder Is Also Murder"|
|Next episode||"Rob-A-Bye Baby"|
Two students at a school for the gifted suspect a teacher of murder, leading Shawn and Gus to go undercover as lecturers on psychic phenomena 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.