Mitch Rapp begins!
OK, let me kick this board off. I am about 150 pages from the end of the latest Mitch Rapp novel which is also his origin story.
There aren't that many 20-something actors I can think of who could play Mitch Rapp but the one that keeps springing to mind is Sean Faris who starred in MMA movie Never Back Down. He is dark featured, a genuine jock and looks about college age. Whilst I always picture the older Rapp as a mixture of Karl Urban, Dylan McDermott and Jeffrey Donovan, I think Faris has the right stuff to play Rapp on his first adventure.
I could also see Jill Wagner as Irene Kennedy and Scott Glenn as Stan Hurley.