Regarding Lon’s “stand in” during “The Unknown”: I never took the knife-throwing scenes as his, I assumed that was a stand-in’s work. But there was this one scene in particular where he was just sitting and talking, and was using his legs like they were hands - using hand-like gestures, resting his chin on his foot, everything. It was amazing.
Now, I suppose that there could have been a “stand in” somehow doing his leg gestures during that scene, but I doubt it. And yes, Eve, he was rather a good looker without the makeup!