The Tri-Psi Sucker SistersWe finally get our first Halloween episode, so you know what that means? BRING US THE VAMPIRES! This week Lana decides to pull a fast one on Clark by enrolling into Met U and one of its well-known sororities: Tri-Psi. Little does Lana know is that the entire sorority, and its president Buffy Sanders, has a bad case of Kryptonite bat rabies. Once Lana is initiated, a.k.a. infected, she becomes ten times worse. With the help of Dr. Fine, Clark finds out who has information about this disease and its cure: LuthorCorp.