Guest Stars Keegan Allen as Toby Cavanaugh Janel Parrish as Mona Vanderwaal Tammin Sursok as Jenna Marshall Brendan Robinson as Lucas Gottesman Nolan North as Peter Hastings Cody Christian as Mike Montgomery Brant Daugherty as Noel Kahn Yani Gellman as Garrett Reynolds Roark Critchlow as Tom Marin Annabeth Gish as Dr. Anne Sullivan Natalie Hall as Kate Betty Buckley as Regina Marin Co Starring Carlos Arellano as Officer Tulio