Book excerpt: Ghouls of the Glacial Lakes and Prairie Region Buried in the annals of the region are torrid tales, disasters and the unexplained. At historic Fort Sisseton, the old hanging tree and a phantom buffalo soldier are just a few of its spectral stories. Partygoers from over a century ago still linger at Aberdeen's Easton Castle. De Smet's historic Laura Ingalls Wilder homestead attracts thousands of visitors annually, many unaware of its familial spirts. Locals in Watertown still debate whether the apparition at the Goss Opera House is that of a traveling performer named Annie or murder victim Maud Alexander, who was set on fire by her own son. Victims of a 1940 train wreck between Milbank and Marvin seemingly never left the scene of the accident. And Captain Luff of The Muskegon disaster can be seen mourning on the banks of Big Stone Lake. Author Deborah Cuyle chronicles the area's most fascinating and perplexing lore.