Question: What was the cause of death for the last prisoner in Spandu Prison?

<P0-S0> Spandau Prison was located in the borough of Spandau in western Berlin. <P0-S1>  The site was later rebuilt as a shopping centre for the British forces stationed in Germany. <P0-S2>  It was constructed in 1876 and demolished in 1987 after the death of its last prisoner, Rudolf Hess, to prevent it from becoming a neo-Nazi shrine. <SEP> <P1-S0> Prisoner 489 is a horror novella written by American author Joe R. Lansdale. <P1-S1>  It tells the story of prison workers who help staff a fictional island prison where only the worst of the worst are housed. <P1-S2>  Most are on death row scheduled to be executed in the electric chair. <P1-S3>  In the potter's field graveyard the headstones are only marked with numbers in the order in which they were put to death. <P1-S4>  So prisoner 489 is the four hundred and eighty-ninth to be executed. <P1-S5>  The workers are only maintenance employees and have little contact with the inmates. <P1-S6>  They have only heard wild rumors about prisoner 489, some quite unbelievable. <P1-S7>  However, on the night of the execution, things go very wrong and the men find themselves to be terrorized and have to fight for their very lives. <SEP> <P2-S0> Rudolf Walter Richard Hess (Heß in German; 26 April 1894 – 17 August 1987), was a prominent politician in Nazi Germany. <P2-S1>  He was taken prisoner and eventually was convicted of crimes against peace, serving a life sentence until his suicide. <P2-S2>  Appointed Deputy Führer to Adolf Hitler in 1933, he served in this position until 1941, when he flew solo to Scotland in an attempt to negotiate peace with the United Kingdom during World War II. <SEP> <P3-S0> A parole bond is a deposit of money or property made to the government as surety that a paroled prisoner will not violate the terms of his release. <P3-S1>  The prisoner may fund the bond himself; or he may borrow from friends or family; or he may obtain the services of a bondsman, in exchange for a fee. <P3-S2>  Part of the theory behind it is that those who are asked to put up the money or cosign the loan have an incentive to verify that the parolee does not represent an unacceptably high risk prior to helping with his release; and they have an incentive to help him stay out of trouble after his release. <P3-S3>  The prisoner has an incentive to be on good behavior during his incarceration in order to demonstrate he has reformed and thus would not be at high risk of violating parole. <P3-S4>  While on parole, the prisoner has an incentive not to violate the terms, lest the bond be forfeited, which would likely cause difficulties in obtaining the surety of family, friends, or bondsmen in the future. <P3-S5>  Parole bonds are sometimes used as a way of relieving overcrowded prisons. <P3-S6>  It is based on the very similar concept of bail bonds; and just as with bail bonds, some statutes allow the bondsman to get back all or a portion of the bond by surrendering the prisoner to the authorities. <P3-S7>  This may require the use of bounty hunters to locate and capture him. <P3-S8>  Organizations like the National Association of Bail Insurance Companies and the American Legislative Exchange Council (ALEC), a national bipartisan group of conservative legislators, have pressed the idea that financially secured postconviction release works far better than unsecured release.