August 1995. Bill Clinton is President. The X-Files is on TV. Computers are beige. Internet spam has just been invented.

Last month, people began disappearing near the southern edge of the San Carlos Indian Reservation, west of Phoenix, Arizona. An elderly couple. A gas station attendant. A pair of campers. Two European couples. An elderly sheep rancher. All disappeared from on or within a few miles of State Road 70. The press are already calling it "The Devil’s Highway", and talking of a serial killer. The Federal Bureau of Investigation have assembled a special task force to assist state and tribal police to investigate the disappearances. Your mission: find out what is going on, and bring the perpetrators to justice...

This is a classic DELTA GREEN adventure, from the original 1997 edition of the game, rewritten for the modern ruleset.

“Those diseases which medicines do not cure, iron cures; those which iron cannot cure, fire cures; and those which fire cannot cure, are to be reckoned wholly incurable.” —Hippocrates

Wed, Nov 21, 2012
At 0800 hours today, CDC received an emergency call from Dr Fritz Strickland, one of two full-time physicians at Hudson's Well Catholic Hospital in Hudson's Well, AZ. In less than 24 hours, eight patients have been admitted, with suspect symptoms, including two medical staff, and three of those have died. High fever is universal, and intense headaches are also reported, along with coughing, nausea, disorientation and hallucinations.

Dr Strickland has isolated the patients and is requesting immediate assistance.

All patients have proven resistant to antibiotics including Cafepime, Levequin and Vancimycin. Tylenol failed to reduce their fevers, and cooling blankets were only marginally effective.

The responders named below are to proceed immediately to Hudson's well Catholic Hospital, identify the illness, set a treatment plan, locate the source of the infection, evaluate the crisis, and advise on contagion and containment.

A small town. A mysterious disease. A secret beyond human understanding. This scenario is from DELTA GREEN: Control Group.

Content warnings: Plague. Horror. Tentacles.

Media report, WDEL-FM:
"We have further news on this afternoon's mass-shooting in Alliance, New Jersey. Police have confirmed eight victims so far, all from the same family, but are still searching the house where the incident took place. The shooter, who killed himself after chasing the final victim into the middle of Highway 6, has now been identified as Michael Wei, a mathematics student at Colombia University. Sources inside the investigation have not identified any connection to the victims so far, or any motive for the crime. State troopers have not so far identified the numbers Wei spraypainted in the middle of the highway, but they seem to be the only clue to his violent rampage. In Washington, Republican Senators have said that their thoughts and prayers are with the relatives of the victims. We will have further updates on this tragic situation as they come in..."

Eight slaughtered innocents, a dead mathematician, and a spray-painted number. No clues, no leads, no motive. As usual, that’s where DELTA GREEN comes in...

DELTA GREEN is an illegal conspiracy within the US government. Its purpose is to protect the United States from preternatural threats. When they detect one, they have three tasks: find it. Kill it. And cover it up.

Media report, KXLH.com, 22 September 1999:
"The FBI and the Wheatland County Sheriff's Department are still mystified by the disappearance of a team of U-Penn archeologists from the Big Porcupine Creek area. While the FBI are tight-lipped, sources within the investigation have confirmed that the disappearance has been linked to that of University of Montana-Helena grad student Franklin Opetz, and that Dr Thomas Thorley is a prime suspect in the investigation. Dr Thorley has not been since since escaping from the custody of the Wheatland County Sheriff's Department a week ago, having been arrested after reportedly threatening the U-Penn team with a shotgun. U-Penn archeologists Dr Emmett Wilson, Larry Kazal, Denise Oester, and Gareth Wylin disappeared sometime on September 8 from the Harlowtown, MT Motel 6 where they had been staying..."

NSA Call Transcript, 09-08-1999 15:35Q (19:35Z) OR [REDACTED] RP [REDACTED]
Wylin, Gareth, working through Charlie for the group. 
Ah, Jesus. Everyone is gone. 
Wilson was the first to go, and he just, like, went... away. But now, and I mean its just been minutes. 
Gone. All gone.
Everyone here, at the dig. We're digging at Big Porcupine Creek, near Harlowtown. Harlowtown, Montana. [static] 
[B]ut I couldn't do it. Its something about the antenna we dug up. Something... 
[prolonged static] 
Hair's standing on end... something— [MESSAGE ENDS]

DELTA GREEN is an illegal conspiracy within the US government. Its purpose is to protect the United States from preternatural threats. When they detect one, they have three tasks: find it. Kill it. And cover it up.

This scenario is from DELTA GREEN: EYES ONLY, but will be run under the Cthulhu Dark system.