Published to wide acclaim in April 2008 in the US, Wurlitzer's fifth novel, his first in 25 years, furthers the author's exploration of the American West and the idea of the frontier. In this adventurous novel, Wurlitzer explores the truth and temptations of the American myth. Beginning in the savage wilds of Colorado in the waning days of the fur trade, the story follows Zebulon, a mountain man who has had a curse placed on him by a mysterious Native American woman whose lover he inadvertently murdered.

"In this third in a series, set on a farm in 1914 Oklahoma, Casey lovingly portrays the Tuckers' close extended family, immersing the reader in both the domestic aspects and the harsh realities of everyday farm life." —Booklist Who killed Uncle Bill? Alafair Tucker is desperate to find out. One August evening in 1914, a bushwhacker ended a pleasant outing by blowing a hole in Bill McBride, kidnapping and ravaging Bill's fiancée, and wounding Alafair's daughter Mary. Does Mary know who did the low-down deed? If she does, the bullet that grazed her knocked that information right out of her head. All she remembers is that it has something to do with the Fourth of July. Several malicious acts testify to the fact that Bill's killer is still around and attempting to cover his tracks. The question is, can Mary remember before the murderer manages to eliminate everyone who could identify him? The law is hot on the bushwhacker's trail. There is little Alafair can do to help the sheriff, but that will never stop her from trying. If there's a chance she can protect Mary from further harm or help her remember, she'll do anything she can. Even confront a vicious killer.

The Drop Edge of Yonder is an adventurous book that explores the truth and temptations of the American myth. Beginning in the savage wilds of Colorado in the waning days of the fur trade, the story follows Zebulon Shook, a mountain man who has had a curse placed on him by a mysterious Native American woman whose lover he murdered. The book follows Zebulon as he encounters people obsessed with greed and the politics of expansion. The trail takes him from Colorado to the remote reaches of the Northwest, a journey that traverses the Gulf of Mexico to Panama, and up the coast of California to San Francisco and the gold fields. Far from being simply a “western,” The Drop Edge of Yonder focuses on a time that could be considered the starting point of American capitalism and expansionism, and has led Judith Thurman to refer to the book as “a subversive modern novel about the bounds of love and the discontents of civilized life.” The Drop Edge of Yonder originated as a screenplay treatment that intrigued Hollywood folk such as Sam Peckinpah, Hal Ashby, Yves Simeneau, Jim Jarmusch, Roger Spotiswoode, Alex Cox, and Richard Gere, before being adapted and expanded into this original novel by Wurlitzer.