A man dying of lymphoma asks Magnum to find his brother who is on the run and happens to be a bone marrow match on Magnum P.I. "Die He Said" is the eighth episode of the show's first season.
If you want to read something, Magnum, why don't you try a book? Mr. Masters has plenty of good reads. Perhaps, you can even find a short one with some pictures in it to amuse yourself.