Special Guest Stars Holly Marie Combs as Ella Montgomery Chad Lowe as Byron Montgomery Guest Stars Keegan Allen as Toby Cavanaugh Lesley Fera as Veronica Hastings Tammin Sursok as Jenna Marshall Torrey DeVitto as Melissa Hastings Brendan Robinson as Lucas Gottesman Nia Peeples as Pam Fields Julian Morris as Wren Kingston Vanessa Ray as Cece Drake / Charlotte DiLaurentis Jim Titus as Officer Maple Huw Collins as Dr. Elliot Rollins Mary Page Keller as Diane Fitzgerald Ava Allan as Addison Derringer Sydney Sweeney as Willa