The Treasure — Bob Doerr

After a successful mission in South America, Clint heads to Las Vegas on vacation and to dig up a stagecoach strong box he had found in the desert earlier but had not opened. Upon inspection, he finds some old gold coins in mint condition and some well-preserved documents. He gives the contents of the strong box to a lawyer to find buyers. One of the documents, unfortunately, creates a maelstrom of violence and murder, and puts Clint squarely in the cross hairs of some Chinese assassins. Clint leaves Las Vegas to keep out of the spotlight, only to find himself going to Alaska in an attempt to rescue a female police officer who had been assigned to protect him in Las Vegas.The Treasure is the fourth book in the Clint Smith thriller series.