Stephen was serving time for manslaughter in Attica, N.Y., at the time for stabbing a man to death. Stephen told a reporter for the Rochester Democrat and Chronicle in 2005: 'I thought I was the only murderer in the family,' after he was shown an article detailing four murders committed by Robert. In fact, each acted without knowing the of his brother's homicidal tendencies. Robert and Stephen Spahalski Identical twins Stephen and Robert Bruce Spahalski would both grow up to be killers but they did not commit their crimes together. Here is a brief look at those cases and five other murder cases in American history involving twins. In the first season of the series, an episode detailed the case of Betty Wilson of Huntsville, who was convicted of murdering her prominent husband. On March 27, the network will air the story of Pete and Pat Bondurant, brothers from Pulaski, Tenn., convicted of murdering a Limestone County woman in 1991. Show “Evil Twins” will feature it second episode featuring twins with ties to north Alabama.