‘s got an exclusive sneak peek of Wednesday night’s (March 21) “Psych” episode, “Let’s Do-Wop It Again,” where Jaleel White returns as Gus’ former Blackapella teammate Tony.

Joining him this time is Mekhi Phifer as Drake – June (Kenan Thompson) is a no-show and the guys are irked. Meanwhile, Cheech Marin also guest stars as the creator of a youth program who gets shot.

And Lassie makes a trip to the big house to check in with his lady love, Marlowe Viccellio. She has an interesting way of ingratiating herself with the prison cliques – watch that sneak peek clip here.

“Psych” airs Wednesday nights at 10 p.m. ET/PT on USA. Also, be sure to tune for Character Chatter with Kirsten Nelson, who plays Chief Karen Vick on the show, during tonight’s episode.

Posted by:Andrea Reiher

TV critic by way of law school, Andrea Reiher enjoys everything from highbrow drama to clever comedy to the best reality TV has to offer. Her TV heroes include CJ Cregg, Spencer Hastings, Diane Lockhart, Juliet O'Hara and Buffy Summers. TV words to live by: "I'm a slayer, ask me how."