Eben Byers was a wealthy industrialist, Yale athlete, and 1906 U.S. Amateur Golf champion who seemed to have everything. After a 1927 arm injury, a doctor recommended a patent medicine called Radithor, a solution of radium salts dissolved in water. Byers became obsessed, drinking an estimated 1,400 bottles over several years, never knowing the radiation was accumulating in his bones and destroying his skeleton from the inside out.

This episode examines how a Harvard dropout posing as a doctor built a fortune selling radioactive water through physician kickbacks, the horrifying biological reality of ingested alpha radiation, and how Byers' agonizing death in 1932 helped shape modern radiation safety standards. We also clear up a widely shared internet myth about a photograph wrongly attributed to him.

• How radium mimics calcium and ...