Throughout the early 1900s "rejuvenation" became a popular concept in minds around the world. This fad would eventually entail bizarre procedures that would graft endocrine tissue from one entity to another. Unfortunately for the inmates at San Quentin prison thanks to leading physician, Dr. Leo Stanley, rejuvenation was tested out right there within prison walls. Tune in this week as Cathryn brings to light one of the most shocking tales of prison experimentation known.