After part 1 of the short story "Three Skeleton Key" written by George G. Toudouze, a ship full of rats crashed onto shore causing thousands of rats to swarm a lighthouse. Three men who manage the lighthouse had to lock all of the doors and windows to keep themselves safe. While one of the lighthouse keepers was sleeping, the rats broke through the trapdoor causing the keepers to be knee deep in furry creatures and bloody wounds. They eventually made it up to the stairs and signaled for help using the light to use morse code. Help came when they saw the light and saw what kind of situation the poor lighthouse keepers were in.
Don't give up, hang on a little longer. We'll get you out of this.
We barely had time to leap back, close the door leading onto the gallery, descend the stairs, and shut every window tightly.
At two in the morning, while Itchoua was dozing in his room, the sheet of metal sealing his window gave way. The chief had just time enough to leap to his feet and cry for help, the rats swarming over him.
Finally, seeing the rats running in and out of the tower through the door and the windows, those on the ship decided that we had perished and were about to leave when Itchoua, regaining his senses, thought of using the light as a signal.