SUTTON COUNTY, Tex. (KTLA) -- A serial killer who set up a torture chamber in his long haul truck and kidnapped hitchhikers across the country has admitted to two more killings.
Convicted killer Robert Ben Rhoades pleaded guilty this week to the murders of a newlywed couple from Seattle in 1990.
Prosecutors said missionaries Patricia Candace Walsh and her husband Scott Zyskowski were hitchhiking to Georgia when they took a ride from Rhoades near El Paso, Texas.
Zyskowski's body was found near Interstate 10 east of Ozona, Texas.
His wife's body was dumped in central Utah.
In exchange for the guilty pleas, Rhoades, 66, was spared the death penalty and sentenced instead to to 2 life sentences, according to the Deseret News.
A month after the murders of Zyskowski and Walsh, Rhodes picked up a 14-year-old hitchhiker and her boyfriend near Houston.
Regina Walters body was later found by a farmer in downstate Illinois, her boyfriend was never found.
Rhoades pleaded guilty to Walters' murder in 1992 and is currently serving a life sentence in Illinois.
Prosecutors say Rhoades had a hidden dungeon in the cab of his his long-haul rig.
The rig was equipped with handcuffs on the ceiling, which enabled Rhoades to chain his female victims so that he could torture them before killing them.
Rhoades is believed to have killed an average of three women a month by the early 1990s.
Trucker With Traveling Torture Chamber Admits to More Killings
Robert Ben Rhoades, 66 (Booking Photo)