No, the blood-licking's about the extent of it. Though Jamie does have one more really weird story to tell in Dragonfly in Amber, of the: "Ye wanna make me swear tae not kill the guy who did THIS tae me?!?" variety.

As for Alex Randall...no, I think he never does really get the full extent of how crazy Black Jack is. And Claire's a bit too nice to tell a man dying from consumption: "Hey, did you know your brother likes to sob your name while torture-screwing other guys? Like, for example, MY HUSBAND."