Guest Stars Jaeden Noel as Lucas Miller-Manning August Winter as Young Kira Manning Co Starring Izad Etemadi as Josh Tartakovich Tedd Dillon as Older Colleague Subhash Santosh as Assistant Michael Ayoub as Study Participant Oksana Sirju as Female TA Paul Bates as Gideon Frankfurt Tara Bastikar as IVF Doctor Edward De Juan as Young Paul Darros Dana Abraham as Gabe Riley Klassen as Baby Lucas Shuyi Jia as Anesthesiologist