Time Travelers is a 1976 science fiction film directed by Alexander Singer and starring Sam Groom, Tom Hallick, and Richard Basehart.
[citation needed] The film was originally developed by Irwin Allen as the pilot for a prospective remake of the 1960s series The Time Tunnel, which ran only one season.
Though Earnshaw is initially bemused by the assignment, Adams' value emerges when he remembers the 19th century discovery of a virus with similar characteristics.
Both men know that Henderson's notes were destroyed in the 1871 Great Chicago Fire, his only remaining artifact a gold pocket watch.
Adams introduces Earnshaw to a former NASA physicist and Nobel laureate, Dr. Amos Cummings (Booth Colman), and his colleague Dr. Helen Sanders (Francine York).
After being outfitted with period gear, clothing, a small microscope and portable centrifuge, Earnshaw and Adams are briefed on the dangers of time travel.
While trying to obtain a blood sample from one of the survivors, Adams initially thinks that he has killed the man but discovers that he had not been cured and would have died anyway.
They show Henderson the futuristic microscope and centrifuge and recite the inscription inside his pocket watch, convincing him that they are from the future.