Giant 'German' rats with massive fangs are feared to be making their way to Britain.
The terrifying river-dwellers have taken over the town of Halle, in Germany - a town just 500 miles from the UK.
The settlement is the birthplace of Nazi Reinhard Heydrich, one of the architects of the Holocaust, in which six millions Jews were murdered.
Its river is now overrun with the hardy rodents known as coypu, water rats from South America which can grow up to 42 inches long.
One resident, who asked not to be named, told the Daily Star: We just couldn't believe it when the creatures turned up in the river.
"A few people thought they were cute but as soon as we discovered they were rats many people became frightened.
"At the minute their numbers seem to be under control but many of us are worried they'll end up multiplying like ordinary brown rats, so the town will be overrun."
Britain has faced the coypu menace before, when the critters invaded the Norfolk Broads in 1945.
A population persisted in the area until the 1970s, when the last was killed.