Guest Stars Tyler Blackburn as Caleb Rivers Janel Parrish as Mona Vanderwaal Keegan Allen as Toby Cavanaugh Tammin Sursok as Jenna Marshall Brant Daugherty as Noel Kahn Yani Gellman as Garrett Reynolds Julian Morris as Wren Kingston Ryan Merriman as Ian Shane Coffey as Holden Strauss