Killer Twins Jane Flasch (Attica/Rochester, NY) 12/15/05 - Two men who are identical twins also share lives of crime. Pretty sure it IS important to serial killers. Stephen was the first to kill, fatally stabbing a. 'I thought I was the only murderer in the family,' Stephen reportedly said in 2005 when an Attica, N.Y., corrections officer showed him a newspaper article about his brother confessing to four slayings. I think he wanted to cause fear and mayhem, but I'm not sure death was important to him.Īlthough identical twins Stephen and Robert Bruce Spahalski were both killers, each acted alone, unaware of the other's homicidal tendencies. I'm not even sure KILLING was always - or ever - his goal. Click to expand.' A serial killer is a person who murders three or more people over a period of more than thirty days, with a 'cooling off' period between each murder, and whose motivation for killing is largely based on psychological gratification.' The Unabomber was about terrorism.