This time travel yarn was well done. The story was compelling and the acting was fine. Sam Groom (an alumnus of the Time Tunnel) plays a doctor drafted by the government to search for a cure to a flu virus that apparently had previously presented itself around the time of the Great Chicago Fire. Research indicated that a doctor (played by Richard Basehart) back then had cured scores of people but this cure was lost to time. (It was also good to see Basehart adding gravitas to the production.) The special effects were understated and the period clothing and sets were serviceable, both were believable. My only quibble with the show was that there did not seem to much to the time travel apparatus itself. There were a few computer flats with blinking lights and a room with a staircase that lead to the past. Adequate, but not awe inspiring like the Time Tunnel. The Time Tunnel set was massive in reality and also in the terms of the show. It created a true sense of wonder. Too bad they could not have married the two concepts. Good show nonetheless.