Maggie Matthews is ready for Halloween in Castlefield. When she gets invited to a murder mystery weekend, she gets the chance to solve a fake murder. However, it's not long before the fake murder turns into a real one and Maggie has to exchange her quill for her magnifying glass once again.

Not only does Maggie have to watch out for Pandora the chicken, who is even scarier during Halloween, but also for the killer. With the help of her fictional detective and her friends, she sets out to solve another murder.