Made famous for his role as Detective Dennis Booker on 21 Jump Street with Johnny Depp, actor Richard Grieco has filmed a secret cameo spot for the new flick 22 Jump Street, Breaking Celebrity News has exclusively learned.

Channing Tatum and Jonah Hill starred in the 2012 movie based on the successful TV show and the followup, 22 Jump Street, is currently in post-production.

"It was so cool to see Richard back in action. He even cut his hair for the role and brought back some of his iconic swag items, which you'll see when the movie comes out," a source on the New Orleans set exclusively told Breaking Celebrity News.