To date, four of the Navajo mysteries have been made into films.
The Dark Wind, starring Lou Diamond Phillips, was made to be a theatrical release in 1991. However, it went directly to video and was never shown in theaters. It can be rented at Blockbuster and other video rental stores.
Considerably later, several more were developed to be shown on PBS's Mystery!: Skinwalkers in 2002; Coyote Waits in 2003; and A Thief of Time in 2004. Information on these (including purchase information) is available from the Mystery! Web site.