Sideswiped / The Inca Con / The French Girl (Rex Dalton #4-6)

Books 4 to 6 in J.C. Ryan's bestselling Rex Dalton series.

Sideswiped
When Rex nearly bumps into someone from his former life, it's time for Rex and Digger to get out of India. Rex goes to Thailand, where he plans to undergo cosmetic surgery to change his looks and hide from people in his past. But then he meets Sunstra. Her name means 'girl with beautiful eyes'. 

Right from the beginning they become fast friends, and before long there is a romance in the making. But then Sunstra disappears. Her family receives a ransom ultimatum: Sunstra is alive, but if her father doesn't sell his land, she won't stay that way for long. 

It's a race against the clock for Rex and Digger to save Sunstra's life, and time is running out. 

The Inca Con
Rex Dalton and Digger are exploring the remarkable history of Peru when they befriend a retired American couple. The couple invites them to join their expedition to a remote village high up in the Andes Mountains to inspect an archaeological site in which they want to invest. 

But on arrival in the village, it doesn't take long for Rex to discover that his new friends are victims of a cleverly designed con. This con is run by people who will do anything to make sure Rex and Digger don't interfere.

The French Girl
Rex Dalton and Digger are looking forward to a trouble-free holiday on the idyllic islands of Vanuatu in the South Pacific Ocean. Swimming, playing on the beach, fishing, and hikes. Nothing but the laid-back lifestyle for the two of them. 

Then Digger introduces Rex to a beautiful French girl, not once, but twice. Soon, Rex and the girl become good friends. Then she disappears, and Rex is accused of having something to do with it. 

Thus, begins a series of dramatic and life-threatening events with international repercussions with Rex, Digger and the French girl in the center of it.