In 1985 and 1986, the skeletal remains of two victims were recovered within one thousand feet (300 m) of each other in a wooded area in Kelleyville, New Hampshire; forensic examination indicated multiple stab wounds.

Between the recovery of the first and second bodies, a 36-year-old woman was fatally stabbed in a frenzied attack inside her home in Saxtons River, Vermont.

Ten days later, the remains of a third missing woman were found, also bearing evidence of stab wounds.

At this point, investigators began examining prior homicides in the area and found two previous cases, in 1978 and 1981, further reinforcing the presence of a serial killer.

Around 2006, private investigator Lynn-Marie Carty proposed that Michael Nicholaou, who shot his estranged wife and stepdaughter before killing himself on New Year's Eve 2005, could have been the Connecticut River Valley Killer[29].