Letting Go. David & Gun, #3

In the third and final book about David and Gun, we follow the couple and the two young men they brought into their lives in "Five At Table", Tom and Chang. "Letting Go" weaves together a series of stories in which David and Gun help the two young men discover the paths that will take them out into the world. Along the way David must confront some of his own fears as well as a ghost from the past.
As "Letting Go" opens, David and Gun are enjoying life with the little family they've created. They're on a trip to see the wonders of Angkor with Tom, the young man they're mentoring, in celebration of his university graduation. But even as they're enjoying the sights, thoughts of the future aren't far from David and Gun's minds as they try to help Tom to find the right career for him. Tom's dilemma isn't the only one facing them.
The once "lost boy" Chang needs to think about his future as well, although right now he's more preoccupied with his boyfriend, the young army man Den. Chang and Den's exploration of more extreme BDSM, as well as a chance meeting with a man from Gun's past, has David increasingly curious about experiencing pain, a place Gun won't go. Will this be the issue that finally drives a wedge between the two? And how will David deal with the opportunities that open up for both the young men he has loved and nurtured?