Reddit provides some bedtime reading:
I had a friend who lived in a house with a three friends in college. He’s sleeping in his room, and its in the middle of the night. He kind of wakes up and hears something, but just figures its the wind or the cat and goes back to sleep. A few minutes later he wakes up again to hear someone softly whispering in a soft, quiet voice “help me”. He opens his eyes and sees this lady with crazy eyes standing over him, with blood dripping out of her nose on him.
Needless to say, he freaks out, jumps out of bed screaming, and runs out of the room waking his roommates as he goes. Everyone wakes up and they call the police, and eventually the story starts to become clear. The lady was tripping out on something bad, she knew she had to ask for help somewhere but wasn’t in a state of mind to know how to go about it. For whatever reason, their house wasn’t locked that night and so she was able to come in and try and ask for help.
And here is the part that creeps me out the most. They followed the trail of blood which she was bleeding out of her nose back out of my friend’s room, and find that it led into each of the other bedrooms, stopping at the bedsides. So all of the other roommates had this lady whispering “help me” while they were sleeping, without waking them up.