Anza-Borrego Desert State Park is a desert setting in the novel’s search for Callan and a missing motorcycle passenger. Its narrative importance comes into focus when a U.S. Border Patrol helicopter spots a scorch mark there, turning a search for undocumented migrants into a lead for Art Keller’s investigation.

Desert Search

After examining the motorcycle tracks, Art narrows the search to the area within one tank of fuel from the junction of a dirt road and I-8. He is looking for a Harley-Davidson Electra Glide, reasoning that Callan could not have taken a passenger very far on the bike. The search makes distance and terrain practical constraints: the relevant clue must lie within the motorcycle’s likely range, not across an unlimited stretch of desert.

The Helicopter Discovery

A U.S. Border Patrol helicopter flying over Anza-Borrego Desert State Park in search of undocumented migrants spots a scorch mark and lands to investigate. Because Art’s team is monitoring Border Patrol radio traffic, the report reaches him quickly. He sends someone to the site with a motorcycle dealer who has a meth-possession charge; the dealer examines the charred remains and confirms that the motorcycle is the model under investigation.

Borderland Setting and Narrative Role

The discovery brings together two searches occupying the same landscape: the Border Patrol’s effort to find migrants and Art’s effort to locate Callan’s motorcycle. The park is not presented as a refuge from surveillance or enforcement. Instead, routine radio monitoring allows Art’s team to turn an observation made during a separate operation into investigative evidence, and the desert becomes a route through which a hidden flight can be reconstructed.