Jenny, the Halloween Spy by Lillie Patterson, 1979.

One Halloween, Jenny goes to visit Nancy, a woman who local people say is a witch.  Jenny is curious about magic and, knowing that there are magical creatures abroad on Halloween, she wonders if she might see something unusual at Nancy’s house.

As she arrives at the house, Jenny peeks inside before announcing herself and sees Nancy putting some kind of oil in her eyes.  After Nancy welcomes her inside and offers her some cider, Jenny sneaks a little of this oil and puts it in one of her eyes to see what it does.  She discovers that the oil allows her to see magical beings that are hidden to most people.  There are fairies in Nancy’s house and rich furnishings that appear very ordinary to Jenny’s unaffected eye.

Using her new ability to see magical creatures, Jenny goes to the town market to see what is going on there.  However, when she catches a pixie stealing some fruit, the fairies and other “wee folk” decide to put an end to Jenny’s spying on their activities.  With some magic dust, the pixie removes her ability to see magical creatures and tricks her into getting onto an enchanted horse that takes her on a wild ride ending with a view of the devil!

The book is available to borrow and read for free online through Internet Archive.

My Reaction

This is a kind of cautionary story about the dangers of curiosity.  Jenny’s curiosity invites the attention of dangerous creatures and leads her into a frightening situation, something that she never wants to repeat.  For the most part, I think that curiosity is a trait that should be encouraged, but Jenny did deliberately seek out a person with a dangerous reputation and pry into the things she was doing, even trying some herself because she wanted to know more about it, so she could be considered to have gone looking for trouble.

In some ways, this book is very strange, but I can see where it draws on old folklore.  The end part about seeing the devil (accompanied by headless hounds) is a little bizarre and rather frightening for a modern children’s picture book but in keeping with folklore about Halloween and witches.  Although everything that happens to Jenny is supposedly really happening, part of me did wonder about the oil that she put in her eye because plants with hallucinogenic properties are used in folk medicine.  As far as the story is concerned, though, the magic and supernatural creatures are real.

The pictures are colorful and fascinating, but this book may be frightening for very young children.  Some of the fairies remind me a little of the pictures that inspired the Cottingley Fairy hoax.