Celebrity Paranormal Project

Mariel Hemingway, Joe Piscopo, Michael Bergin, Picabo Street, and Tonya Cooley investigate a facility known as "The Walls," a haunted maximum security prison in the south, where warden Tom Grisholm was murdered by an inmate.

Gilbert Gottfried, Kimberly Caldwell, Traci Lords, Evan Farmer, and Jeremiah Trotter revisit the haunted asylum to track down another ghost. This time, it is the spirit of Mad Ray, a criminal who suffered from paranoid schizophrenia.

David Carradine, Coolio, Andrew Firestone, Mia St. John, and Bridget Marquardt investigate a haunting related to mill accidents in Bangor, Maine.

Ernie Hudson, Eric Nies, Nicole Eggert, Willie Garson, and Courtney Friel investigate a haunting at an industrial mill.

Evander Holyfield, Debra Wilson, Jason “Wee Man” Acuña (“Jackass”), Nikki Ziering and Julio Iglesias Jr check out the ruins of the cult commune.

Christopher Knight, Adrianne Curry, Danny Bonaduce, and Gretchen Bonaduce bring CPP back to a haunted prison in Nashville, TN, to investigate the paranormal in the season finale.