novel. >> i thought about would stieg do this.e. they were hacking emails in his work against right wingers. they were doing undercover operations. this is just true what he's writing in his novels. then i decided i can also do that. >> reporter: he traveled to northern cypress under an ass e assumed identity to meet with the subject of the 30-page memo from back in 1986. a swedish citizen, staklasa believes he might be the middleman in the killing. >> on one side you have south africa. on the other side you have individuals among the right-wing extremists of sweden. at the time of the murder of palme, he was working for williamson. >> reporter: the spy for south africa's apartheid government spoke on the record. >> he's proud of saying, i was soldier, i was carrying out orders, i was doing the job. i was doing the dirty work for my government, and ply government was doing the -- my government was doing the dirty work for western governments. >> reporter: dirty work including up to murder. >> yes. >> reporter: wow. olaf palme had