In interviews with the sailors , Bikel learns of some of the high-pressure police interrogation techniques -- including the threat of the death penalty , sleep deprivation , and intimidation -- that led each of the `` Norfolk Four '' to confess , despite a lack of evidence linking them to the crime .
in interviews with the sailors bikel learns of some of the high pressure police interrogation techniques including the threat of the death penalty sleep deprivation and intimidation that led each of the norfolk four to confess despite a lack of evidence linking them to the crime