When Henderson was being interrogated by Bauer, He said you don't wanna test me jack, You're gonna open doors you wish you didn't open (or something like that that). So he probably knows about Audrey being evil or at least being framed for evil.
And I'm really interested in this Wayne Palmer stuff. I saw his name at beginning of the Episode (DB!) so I was all ready to hear what he had to say to Aaron, only to find out I'm still gonna have to wait
And why did tony get screwed? He only got a one second goodbye. I am very disappointed in the 24 writers!