The windmill is whispering . . . Ellen, Tanya, and Sue are taken by surprise when the Ford Motor Company contacts them through Sue’s blog with an unexpected request. The company’s outdoor museum in Dearborn, Michigan, has become a hotbed of eerie whispers and ghostly encounters, especially near the iconic windmill. Tourists report disembodied voices, and museum officials are worried it’s scaring off families, their core visitors. Excited by the challenge, the trio sets out to uncover the truth behind the haunting, only to be met with baffling clues and unsettling phenomena. The deeper they dig, the stranger the case becomes, raising more questions than answers. Could this be the mystery they can’t solve? Time is ticking, and the windmill is still whispering . . . The books in this series can be read in any order.