We groggily went into the baby's room to investigate. The turtle was still and silent, the boy asleep, but his mobile was spinning and playing music. While a spinning mobile is nothing to get excited about, you should realize that this mobile only plays and spins if it has been wound. It then plays until it completely unwinds. Suddenly we were in a state of terror the likes of which I had never felt before. I told my wife to stay in the baby's room while I searched the house. I started with the closet in the baby's room. Next my study, empty, but there I picked up a hammer. Room by room I searched: all rooms empty, all doors locked, nothing out of place. Puzzled I returned to the baby's room. We decided that it was one of three possibilities: 1) The mobile at some point had become stuck, and chose that time to become unstuck, 2) a psychopath had a key to our house, unlocked the door, went directly to our babies room in pitch black, wound the mobile, left, and locked the door behind him, 3) we had a ghost.
We took the boy into our bed for the rest of the night, and slept unsoundly. The next morning in the light of day we felt a little silly and realized that the mobile had just become stuck. There were several times in the past when you would bump it, and it would play a few more notes.
Only later in the day did I really look closely at the mobile and realize the truth. This mobile has iconography of Cthulhu. Obviously cultist are distributing these mobiles to unsuspecting parents, and using some sort of subtle mind control over the babies to make the babies become cultist in the future, or something far worse. We are throwing away the mobile, and changing the locks on our doors!