Quinn Martins Fugitive series was so good, that another company took a stab at using fiction to create the same show with a different twist. They took James Gunn novel about a guy born with a genetic defect, that he never ages, & the problems that creates in his life every time someone bad found out about that & tried to chase him down because they wanted some of his immortality.
Christopher George fresh from his WW2 series splash on the Rat Patrol became the guy. Of course he is still human & can be killed, but once rich people found out they could use his blood to stay young, they were chasing him just as fast as the police chased Richard Kimble.
The reason this did not get past the first season is that they did not get the dramatic scripts that the Fugitive got. The format was kind of limited too. Last but not least, the show failed to create much of a stir in the ABC line-up. The late 60's were not real pretty for ABC. They often got a lot of press with high concept shows like this one & the Second Hundred Years, but the shows lacked the quality to really hook the audience.
While this show was done pretty well & George showed a lot more acting in this than he did as a Rat Patrol member, it just did not catch on though there is a show I recall where Be Richards (George) mocks his main rich pursuer, Mr. Maitland pretty well. I am not sure I'd want to be afflicted with this type of immortality. It seems to me it is a big crutch as if I had it, with my luck, I'd wind up hooked to a bunch of tubes at Michael Jackson's Neverland Ranch.