Guest Stars Nicholas Campbell as Grandpa Gordon Cooper Alli Chung as Detective Taylor Kim Andy McQueen as Det. Malik Abed Michael Healey as Dr. Ian Peterson Rick Roberts as Gerald Henry Jones Co Starring Kiley May as River Baitz Graeme Jokic as Matteo Keller Viaene as Young Katie Emmanuel Shirinian as David Khalighi Sherilyn Allen as Courtney Rosemary Dunsmore as Mrs. Panych Jim Armstrong as Sully Rothaford Gray as Tiny Tiny Taylor Belle Puterman as Young Jenny Felix Famelart as Stunt Gerald Henry Jones