Ray is an enigmatic adventurer with no traceable past who travels from place to place fighting crime and helping people in trouble. He refuses to be paid for his services; however, those seeking his assistance must promise him a favor.
The search for a missing fieldworker turns up a marijuana farm and proprietors who make sure the enslaved laborers don't tell tales after the harvest.
Stingray poses as a surgeon to investigate a hospital's abnormally high mortality rate, and why the deceased don't appear on admission records.
A woman hires Stingray to find her husband, a deep-sea diver for an oceanic-research facility that has no records indicating he ever worked there.
Stingray is hired by a police captain who claims he was framed for his wife's murder, even though another officer's polygraph testimony refutes his alibi.
Someone is turning college psych students into sociopath assassins. Ray goes undercover to find out who, and runs into the man who "created" him.
A mental patient recruits Ray to help her find out why other patients are vanishing from a psych hospital, and Ray soon discovers that she's telling the truth.
Ray faces a different kind of opponent when a virus outbreak threatens to wipe out California... and an infected man turns up on his doorstep.
A serial killer follows the same route as a tent show revival, so Ray goes undercover as a preacher to find out who is responsible.
A pharmaceutical company's chemist vanishes after enlisting Ray to investigate drugs that are killing thousands in third-world nations.
Someone advertising a black Corvette Stingray for barter is suspected in a series of strangulation murders.
The sole survivor of a failed space-isolation test, Ray's friend faces murder charges unless a re-creation of the mission can clear him.
A woman wants Ray to get her brother out of a jam---an armed robbery that netted $700,000 earmarked for Colombian drug dealers.
An artist wants to delay her opening because of threatening phone calls from a man who died three years earlier while stalking her.
Stingray tries to find out what story a TV newsman was working on when he was killed.
Needing inspiration, a mystery writer invents a case in which Ray is an unwitting participant.
Stingray plays peacemaker between a real-estate developer and Indians who claim a construction site is located on a sacred burial ground.
Stingray poses as a dockworker to investigate the death of a friend in a cargo-handling mishap.
Stingray is enlisted by a military-school cadet who's the victim of a series of "accidents" after witnessing a murder committed by upperclassmen.
The star of a popular medical soap opera manages to run into trouble with both the Yakuza and the Mafia, and his agent puts him in touch with Ray.
A ghetto high-school principal, a former gang member himself, hires Stingray to try to prevent some of his students from falling in with his former associates.
Stingray is blinded in Vietnam trying to recover a statue that will help locate American MIAs.
A Russian defector asks Ray to recover her father, a scientist who has been abducted to force her to return. Her father is being being brought back by ocean liner to the Motherland. Ray calls upon his favors to assemble a team... but things don't quite go as planned.
Stingray searches for a missing crop-duster pilot caught up in a war between rival pot growers.
