what role did the blood evidence play in the sam sheppard case
DNA evidence, which was not available in the two murder trials, played an important role in the civil trial. DNA analysis of blood at the crime scene showed that there was presence of blood from a third person, other than Marilyn and Dr. Sam Sheppard.n 2000, Sheppard's son, Sam Reese Sheppard, who was seven at the time of his mother's murder, sued the state of Ohio for his father's alleged wrongful imprisonment.