I've been developing an idea for an SCP, but before I go any further I was hoping I could get some feedback to see whether or not it has any merit, and perhaps avoid some pitfalls.
The SCP is discovered by police in an apartment building after several other residents complain of hearing hysterical shouting coming from inside the building, along with a child persistently crying. After breaking down the door of complaint apartment, they find two hysterical men inside one of the bedrooms, along with the distressed infant. The two men are entirely identical, and both seem to have sustained a number of bruises, while deep gouges in the floor and wall line the center of the room. As the officers attempt to calm the men, it's soon established that the pair mirror each others movements exactly. As the one nearest the door breaks free from a policeman's grip, he desperately tries to get to the child, only to find himself blocked by his counterpart, and breaks down crying.
The man/men are removed from the building discreetly by lying them on stretchers and moving them in synchronisation, while the child is taken in to custody. The men are then placed under SCP Foundation control and studied. After it's established the man/men pose no threat, a psychologist is assigned to his case, and henceforth the story is told mainly through a series of logs and interviews. Some significant events that occur during the study include:
- The two men are detained within separate cells, unable to see each other for fear of distressing him/them.
- Questioning reveals no discernible cause or reason for the mirrored man's existence (while I plan to imply one or more possible causes, I think leaving this ambiguous is more creepy).
- Medical testing reveals that the 'mirror's' internal structure is reversed (ala situs inversus), and that anaesthetising one of the men paralyses the other, but does not shut off brain function.
- The 'mirror' speaks sentences entirely backwards, beginning with the last word in the sentence, implying that the mirror knows how the sentence will end before the unmirrored man does.
- If one of the pair is unable to move in a direction the other can (say one of them walks through a doorway, but if the other were to travel in that direction they would run in to a solid wall), the one who cannot reach will force themself against any impeding surface, to the point where it is severely painful, until the two can be corrected.
- The unmirrored slides deeper in to depression while in captivity, and repeatedly requests to see his son (the child removed from the apartment). Through a series of interviews/background checks it is revealed that the man has suffered from severe depression in the past, and is an only parent. The stress of looking after a child is cited in his medical records as being a major factor in the depressed episodes, and the unmirrored states that on the day the mirror appeared he was no longer sure if he could summon the strength to answer the child's cries one more time.
- The unmirrored is monitored sleepwalking, while the mirrored appears to be awake and performing the same movements.
The story concludes when the unmirrored suddenly comitts suicide, stabbing himself with a pen left in his cell. The mirror, however, has no such thing in his cell, and does not die. Instead, the mirror becomes unresponsive to all stimuli, though body functions seem to be normal, and he will eat/drink/excrete if prompted. The only stimuli that seems to cause a response is when the child is present, who he cradles lovingly, smiling widely.
My current draft can be found here, but be warned it's quite unstructured at the moment and not at all refined, so it may suck.