The Five Knots by Fred M. White

Beatrice emerged from a throng of chattering people presently and Wilfrid followed her into the hall.

"I hope you don't mind," she said, "but I should like you to see my maid. It may be nothing but a passing fit of hysteria, but I never saw her so nervous before. She went to the village on an errand this afternoon, and when she came back she told me she had been frightened by two large monkeys in the pine wood behind the house. She said that they vanished in a most extraordinary way. I should have put the whole thing down to sheer imagination if I had not known that some animals have escaped recently from the circus at Castlebridge."