Salter Giddens
— Dr. Winston Beaumont
Stephen Clark
— Dr. Winston Beaumont / Father Thomas
Oto Brezina
— Carl Jenkins / Louis Pasteur
Grant McKaskle
— Gregor Mendel
Rebecca Ritz
— Claire Redding
Beth Shea
— Maria Jenkins
Terri Power
— Valerie Walker
Rob Young
— Chester Abaca
Vern Hall
— Charles Redding
Romeo Gerolaga
— Dr. Antoine BeChamp
Gina Fields
— Eileen
Fred Dekom
— Dr. Greg Simpson
Michael Chapman
— Fred
Michael R. Coleman
— Mark
Shelly Little Feather
— Ginny
Sharon Nichols
— Sarah Redding