Here the author shares some insights about casting the lead in an adaptation of the series:
Strangely enough, the character I never have a visual sense of is my protagonist, Travis Chase. That's probably because I'm usually writing from his point of view, the story focusing on what he sees and, more importantly, what he thinks.Learn more about the book and author at Patrick Lee's website and blog.
Other characters I do get a sense of, visually, but not specifically enough that any certain actor or actress comes to mind.
In the past, I've hinted that a great lead actor would be a CGI mix of Brad Pitt, Leonardo DiCaprio and Matt Damon. This would be cost-effective and probably not difficult to schedule.
Alternatively, they could always cast me in the role, freeing up the budget to cast someone like Natalie Portman as Paige Campbell. That is a brilliant idea--why am I the first to think of it?
Failing that, I'm available to play Man in Elevator. Or the off-screen role of Man getting yelled at by the key grip for tripping over lighting cords.