Today I finished reading The Bourne Objective by Eric Van Lustbader.
This was the eighth Bourne novel. Three by Ludlum and five by Lustbader. I've enjoyed them all.
I'm not sure if this one is the most violent or if I just woke up to how over the top the violence is in the Bourne novels. This one is almost like an encyclopedia. There may be a method of killing or incapacitation that isn't described but there can't be many.