A harrowing accident on the Bright Angel Trail, Grand Canyon, leaves Krista badly shaken. She suspects her ex-husband, Jonathan, wanted by the authorities, has resurfaced with his lethal purpose. In Sedona, the family meets Angel (a menacing ruffian from deep in Mexico), Edgar (a mysterious hiking-supply shop owner), Billie (a USFS ranger), and a lecturer from the Hopi tribe. Inexplicably, paths cross resulting in two stabbing victims at Sunset Crater. Krista is in shock, inconsolable with grief and anger after finding the bodies—blood intermingling with the red cinders of Palatsmo.
Immediately suspecting Jonathan, she sets out with dogged determination to prove his involvement. FBI Special Agent in Charge Dean Black leads the investigation. Dean and Krista spar as they independently hunt a cunning madman. Forensics and witness testimony widen the suspect pool. Is this really the work of Jonathan? Something is off. Krista is troubled and confused. The FBI receives a letter from a “Concerned Citizen.” Is Krista a suspect, too?
The authorities have more than one perplexing case to solve: Two tourists are gunned down in their car at a vista overlook. A fire at a bucolic campground reveals a homicide among the ashes of a jeep. Two locals disappear overnight. A police confrontation at one of Arizona’s original general stores leaves the shooter dead. A sedan careens off a highway and remains hidden from view until a helicopter sights this crash; a fatality awaits within the vehicle. Do these tragedies have a connection?
Jonathan stalks and threatens Krista. He makes his presence known while continuing to elude capture for his past crimes. Krista has an explosive confrontation and physical altercation with more than one suspect in the double murder at Sunset Crater. She battles her own emotional demons; her loved ones face mortal danger as she struggles for the truth. Like a speeding locomotive without an engineer, no one sees the truth coming.