“Longlegs” is divided into three chapters, the first one entitled “His Letters,” a title which refers to Longlegs’ mysterious letters, of course, including and especially the one Lee receives in the dead of night, left on her desk by someone breaking into her secluded cabin home. Using the coded letter, written on a birthday card for a 9 year old, Lee cracks the code, discovering that the decoded message refers to a Bible verse, which leads her to more theories and research. While more victims of Longlegs (such as a family whose neighbors believed were vacationing at Disneyland for the past several weeks) are discovered in town, Lee discovers that there is a pattern to Longlegs’ killings, especially to when they occur. While each of his victims involve a young girl who was born on the 14th of any given month, the varying dates of when the killings actually occur seem to build a pattern, one which corresponds to a Satanic rune Lee discovers in a book on the occult.

Using the principle of police procedure, Lee and Carter decide to visit the home of the first recorded victims, the Camera family. While investigating the property’s old barn, they find in the attic a buried doll of a young girl. When they take the doll to be examined by a coroner (Daniel Bacon), the man is impressed with the doll’s craftsmanship and says that it’s simply a normal doll; save for the small obsidian ball that once laid in the doll’s head, which seems to have some unusual but non-threatening properties.

Meanwhile, somewhere else in Oregon, Longlegs visits his local hardware store to buy more supplies, creeping out the teenage girl (Beatrix Perkins) working the store’s counter. Fortunately, she asks her dad for help with the “creepy guy,” but Longlegs still leaves with enough material to make some new dolls.