A Michigan woman wonders if her family clock kept time for the entire Midwest during the 19th century. The search takes HISTORY DETECTIVES host Elyse Luray back to the industrial age when the country first began regulating time. Then, a document seems connected to an early controversial religion -- the first religion founded by an American-born woman. History Detective Gwen Wright wants to know why her name is missing from this critical record, the 'Incorporation of the Universal Friends Church.' And, in an encore segment, detective Tukufu Zuberi heads to Cat Island, near Gulfport, to find out what went wrong with a WWII dog-training program there.