Guest Stars Éric Bruneau as Liam Bouchard Gia Ariganello as Little Girl Jonathan Tan as Dr. Luca Cheng Emmanuel Shirinian as David Khalighi Charlie Mark as George Jamaal Grant as Dr. Phillip Harrison Kyana Teresa as Hayley Byron Abalos as Ben Hammond Julie McLeod as Colleen Hough Marie Dame as Mary Tony Ofori as Tyler Steve Cumyn as Mike Ang Kiriakos as Young Woman Jonah Jessop as Young Guy Pedro Miguel Arce as Marcus Hough Angel Echávez as Pharmacy Civilian Zachary Bennett as Detective Muller