Guest Stars Loretta Walsh as Florence Yost Hrothgar Mathews as Ned Yost Gracyn Shinyei as Emily Montgomery Mitchell Kummen as Gabe Montgomery Darius Zaviceanu as James Fremont Chelah Horsdal as Cat Montgomery Sean Michael Kyer as Albert Bickley Elisabeth Boys as Cassandra Garner Emily Perkins as Marta Crocker Jill Morrison as Carla Noonan Jimmy Townsend as Charles Andrew Walker as Billy Hamilton Laura Bertram as Mary Dunbar Will Verchere Gopaulsingh as Caleb Dunbar Derek Hamilton as Dewitt Graves Duncan Ollerenshaw as Wendell Backus Sean Tyson as Sam Zaitlin