Guest Stars B.D. Wong as Dr. George Huang Gretchen Egolf as Kendra Gill Sonya Walger as Anne Barnes Eric Close as Colin Barnes Ryann Shane as Ashley Riggs James Van Der Beek as Sean Albert Tina Benko as Grace Avery Nikki M. James as 911 Operator Sara Hogrefe as Taylor Barnes Nestor Rodriguez as Ian Vaughan Shannon Walsh as Cate Avery Samantha Cordero as Angela Riva Mark Boyett as Philip Kelly Lissette Espaillat as Sofia Riva Linda Marie Larson as Emily Potsdam Gil O'Brien as Irish Barfly Jake Katzman as Sam Avery Maria-Christina Oliveras as Nancy Dale Kathryn Rossetter as Ashley’s Mom Clarke Thorell as Geoff Avery Heather Marie Wolf as Melissa Stack Uncredited Steve Zirnkilton voices Opening Narration