According to the book The Fugitive Recaptured, ABC announced in April 1966 that the series would film episodes in Mexico, Puerto Rico, and Hawaii. This never came to pass but may have occurred had the series gone to an originally-planned fifth season, a plan vetoed by David Janssen because he was physically worn out from the demanding shooting schedule. At this April 1966 announcement ABC also disclosed that they would add a young son for Kimble for the show's fourth season, in an attempt to draw more younger viewers. This plan was aborted in a May 1966 press conference when ABC realized the idea would not work given the specter of Lieutenant Gerard. See more
The Fugitive, a QM Production, starring David Janssen as Dr. Richard Kimble, an innocent victim of blind justice, falsely convicted for the murder of his wife, reprieved by fate when a train wreck freed him en route to the death house; freed him to hide in lonely desperation, to change his identity, to toil at many jobs; freed him to search for a one-armed man he saw leave the scene of the crime; freed him to run before the relentless pursuit of the police lieutenant obsessed with his capture.