Driving home with her GPS last week, author Jennifer Weiner was inspired to write her first ghost story, Recalculating. She published the story today as digital Halloween treat.

It took Weiner five hours to draft the 35 page story about a haunted GPS device. In a matter of two days, the team at Atria Books edited the book and designed a cover. You can find the digital short for 99-cents on Amazon, on B&N and on iTunes.

What do you think? Here’s more about the book: “I was thinking of a darker, more dangerous kind of GPS. And then, I started asking the writer’s big question: why? Why would a GPS want to do a bad, bad thing? Just like that, I had a story. An abused wife. A dead husband who doesn’t want to stay dead. A gift-wrapped box in the attic…and a GPS that starts telling its new owner to make some seriously wrong turns.”