Guest Stars Ronald William Lawrence as Luke Lily Rabe as Sarah Cullen Gonzalo Menendez as U.S. Marshall Patrick Gonzalez Bug Hall as Nick, Sarah's boyfriend Laura Cerón as Caroline Chad Todhunter as Trevor Dunker Gregg Daniel as Parks and Recreation guy Jessi Mechler as Young Caroline Silvia McClure as Melissa Cullen Olivia DeLaurentis as Young Rhetta Miguel Nájera as Tribal Chief of Police Julianna Keller as Young Grace