Guest Stars Nicholas Campbell as Grandpa Gordon Cooper Jeananne Goossen as Sabina Grace Lynn Kung as Greer Arsinée Khanjian as Muna Kalighi Co Starring Kiley May as River Baitz Clare McConnell as Erin Martin Coal Campbell as Young Gordon Cooper Ellora Patnaik as Richie Singh Samora Smallwood as Lisa Grigson Diego Fuentes as Detective Mills Robert Calwell as James Grigson