Sisters of Sorrow
Deep beneath the North Atlantic¸ all kinds of things can hear you scream.
"The crew of German U-boat UC-12¸ is sent on a standard mission; penetrate the North Sea defensive zone¸ make their way to Tyneside¸ lay their mines and return. But nothing in the Great War is that simple. While underwater¸ the crew start to hear a strange¸ muffled booming noise¸ ringing like a sequence of church bells. It's not whales. It's not enemy forces. Something else is down here. While settled on the sea floor to get some much-needed rest¸ the crew starts to act suspiciously. Someone is up to no good. The ship's cat disappears and a strange weed is found growing on board.
"Then the tapping on the hull begins.