We now know that Dr. Sam Shepard was innocent, during the investigation of Marilyn Shepard's murder. The police interviewed Richard Eberling, the Shepard's caretaker and fixit man within hours of the murder. During the interview, Eberling volunteered why his blood "might" be found in the house. He said that he had cut his hand on a nail at the house and showed it to the interviewing officer. A trail of blood was found in the house, from the Shepard's bedroom on the second floor going downstairs and out of the house. When the police examined Sam Shepard they found that he had no cuts or wounds on his body. Richard Eberling was found to have pawned one of Marilyn's rings.
20 years later Eberling was convicted of another murder and suspected of several others.