A crumbling mansion that has seen much better days; a coded message that may lead to treasure - or may just be gibberish; a middle-aged man with personal demons searching for legendary treasure and his own redemption; a young, fledgling writer looking for a best-selling story idea to fulfill a lifelong dream; and a certain presence, horrible and hidden, lurking around the mansion and its grounds, just waiting for the right moment to strike... These are the elements that comprise The Heidi Code.

Hickox House stands as a monument to Duluth's past. One of several mansions built throughout the city at the turn of the twentieth century in this Minnesota port town, Hickox House draws attention for two reasons: the lost treasure supposedly hidden somewhere on its grounds, hinted at by a coded message, and the mysterious, frightening sights and sounds reportedly emanating from the imposing old mansion. Ed Hickox seeks his Aunt Heidi's lost inheritance, while Billy Steele seeks the elusive story idea that the house may inspire. However, they may only find what neither of them sought: the deadly terror awaiting them at Hickox House!