Special Guest Stars Linda Hunt as Henrietta "Hetty" Lange Guest Stars Riley B. Smith as Ralph Dineen David Fabrizio as Merrick Shohreh Aghdashloo as Dr. Cassandra Davis Josh Keaton as Phil Daniels Raphael Sbarge as Curator Paulson Amber Friendly as Special Agent Elise Carey Mike Powers as Jacques Labeaux Lissa Pallo as Museum Guard Daniel Phai as Mansion Guard Gisela Kovach as Mrs. Mueller