Idaho investigators announce they have identified a man who died in a Boise church more than 40 years ago, and they believe he could be connected to the 1982 Tylenol murders in Chicago. ↧ Idaho officials identify 1982 suicide victim, seek out potential co... The “Unknown Wanderer” was identified as Dr. Mathew Betkouski, who people said had a fascination with the “perfect crime” and the use of cyanide as a killing method.