A creepy Texas trucker who is already serving a life sentence for murder has admitted to two more killings in his mobile dungeon of death.

Robert Ben Rhoades, 66, confessed to slaughtering 14-year-old runaway Regina Walters in Illinois in 1990, and has now admitted responsibility to the grisly deaths of a pair of newlyweds who met their demise in the traveling torture chamber in the cab of his long-haul rig, reported ABCNews.com.

A man who is in prison for killing a prostitute in 2007 is now suspected of murdering at least three more across the South.

John Boyer, a long-haul trucker, is currently serving a 12 year sentence after pleading guilty to killing a prostitute named Scarlett Wood in Wilmington, North Carolina, but in the last few months he has confessed to killing even more women throughout the Southeast and faces murder charges in Tennessee and South Carolina.

His demeanor is so violent that even his own attorney suspects that there may be more victims who were murdered.  “It wouldn’t surprise me if there’s other stuff out there,” H. Lawrence Shortwell said.  “I have absolutely nothing other than a gut instinct on that.”