Guest Stars Tyler Blackburn as Caleb Rivers Janel Parrish as Mona Vanderwaal Lesley Fera as Veronica Hastings Tammin Sursok as Jenna Marshall Drew Van Acker as Jason DiLaurentis Brant Daugherty as Noel Kahn Shane Coffey as Holden Strauss Natalie Hall as Kate Heather Mazur as Isabel Randall