

When a novel virus devastates the world in 1976, Dr. Earnshaw notices that it resembles a virus that a Dr. Henderson found a cure for in 1871 Chicago. However, the doctor perished and his notes were destroyed in the Great Chicago Fire. Earnshaw is approached by a government agent, Jeffrey Adams, who informs him of a Top Secret time traveling technology and asks for his assistance in finding Dr. Henderson and his cure. But their adventure becomes a race against time when a glitch sends them back to the day before the fire instead of the planned four days.
Alexander Singer
Irwin Allen

Dr. Clint Earnshaw

Jeff Adams

Dr. Helen Sanders

Dr. Amos Cummings

Dr. Joshua Henderson (1871)

Jane Henderson (1871)

Dr. Stafford

Jim Younger (1871)

Pegleg (1871)

Hansom Cabby (1871)

Joe - Hospital Attendant (1871)

Katherine - Irish girl (1871)