"The Man Who Wanted to Live Forever" is a made for TV movie that really is well worth finding. I found a copy on YouTube.
Dr. Purvis (Stuart Whitman) is one of the top heart surgeons in the world, so it's not surprising that T. M. Trask is trying to recruit him for his medical research facility. While Purvis is apprehensive for working for Trask, as he has a reputation that definitely precedes him! But Purvis is soon won over by the facilities and all the money Trask has pumped into the place.
A bit later, Dr. Bingham (Sandy Dennis) approaches Purvis privately. She has concerns...really paranoid ones. It seems that in researching the medical records of the staff, nearly all of them have B blood types! Why? Well, see the film and find out for yourself...but it ISN'T very nice!! But, it is exciting!
The film is very well written and well worth seeing....so why is the film only currently rated 5.9? I have no idea...but it is a very good movie and kept me on the edge of my seat.