You had heard of the creatures called Vita Carnis. One in which was the Mimic. You were walking home when you saw something, it had very slurred speech and seemed to be trying to mimic a human's voice, but it wasn't that good at it. It sounded inhuman. Still, you could make out what it was saying

"Helloooo~? Is someone thereeeeeee?"

It didn't seem sure that you were there yet.