TEXT: Me, Myself, and You 
  This scenario works best if one of your players has Dissociative Identity Disorder, and their alternate 
  personality has not yet been revealed. On the other hand, they could have it and not even know they 
  have it yet. 
  What the PCs know 
  After a week of nightly blackouts of the local museum and the surrounding city blocks, Maria Prince, a 
  curator, has gone missing. She didn’t turn up for work, but her car is parked in her spot. There was no 
  answer when they called her at home, or on her cell. She is a Delta Green friendly, known to the PCs. 
  They’ve worked with her before, and she was very trustworthy. She was not on an active case, but the 
  blackouts, and her association with the group, have made her a priority, so the PCs are assigned to it. 
  What has happened 
  The alternate personality(AP) has learned that they are trapped within someone’s mind, and they want 
  out. During one of the times they were in control(probably during an opera), AP learned of the 
  Tilinghast Resonator, and believe they’ve discovered a way to use it to remove the other personality 
  from the brain they share. The Resonator is located in the basement of the museum(where AP works 
  as a night janitor), somewhere in the labyrinth of corridors, supply closets, and one rather large and 
  foreboding boiler room. The personality has been exercising more control, being able to take over 
  while the dominant personality sleeps, but not enough control to fully take over. So they work through 
  the night, and return the body to bed, so not to arouse suspicion. They have been testing the 
  Resonator over the past week, and finally ran a full test with Maria as a subject, which was a complete 
  success. Her personality was removed, leaving her in a vegetative state. She is in a locked supply 
  closet nearby the Resonator, and if not found within two more days, she will die of dehydration. 
  AP now wants to use the machine once more, this time on themselves, removing the dominant 
  personality, leaving AP in control. Of course, there’s an issue. The Resonator opens up the doors of 
  perception to monsters that lurk just outside of our realm. Creatures that feast on our psychic energy. 
  Maria’s personality is still trapped in the Resonator, fighting off these creatures. This has driven her 
  insane. When the Resonator turns on, not only will the creatures attempt to consume the minds of 
  anyone within it, but Maria will also try to take over one of the bodies(at this point she doesn’t care 
  whether it’s hers or not). AP believes they are stronger than the dominant personality, and as soon as 
  that personality is removed AP plans on making a break for it. 
  Investigation notes 
  An address for the night janitor can be found in the museum’s employee records. Anyone with 
  Bureaucracy 50% or higher will be able to tell from a quick search that the record is riddled with false 
  information. Searching for a birth certificate, driver’s license, or any other records will lead to dead 
  ends. 
  The address is to a bachelor apartment with little to nothing inside. Forensics of 40% or higher can tell 
  that it hasn’t been lived in for months, there are few fingerprints and barely any other physical 
  evidence to be found. Any fingerprints that get run through a database will turn up as the agent with 
  the dominant personality, which could of course cause some problems for the agents, in addition to 
  confusing them further. 
  
  None of the daytime employees have ever met the night janitor. There is no picture on file(they keep 
  meaning to get it taken care of, but they just never seem to meet up to get it done). Even the night 
  security, when pressed, will admit they’ve never actually met the janitor. 
  Maria Prince had been working more nights, but no one knew exactly what on. She was always 
  obsessed with her work, and working long hours was nothing new. None of her coworkers remember 
  her ever mentioning the night janitor, but they will note that she generally kept to herself. She had no 
  home life, was unmarried and had no pets. At her modest apartment everything is kept immaculately 
  clean, and there will be no signs of struggle. 
   
  
SOURCE: textdata/thevault/Delta Green [multi]/adventures/Fairfield Project Shotgun Scenarios/Delta Green - Adv - Me, Myself, and You.pdf