Guest Stars Tyler Blackburn as Caleb Rivers Keegan Allen as Toby Cavanaugh Janel Parrish as Mona Vanderwaal Drew Van Acker as Jason DiLaurentis Nia Peeples as Pam Fields Nolan North as Peter Hastings Brant Daugherty as Noel Kahn Andrea Parker as Jessica DiLaurentis Roark Critchlow as Tom Marin Claire Holt as Samara Co Starring Courtney Davies as Quinn