Sherlock Holmes Fic Finding Community

I have a query to the entire Sherlock Holmes LJ Community (though this seemed the most appropriate place to stick it):

I viewed my Sherlock Holmes last night with two of my roommates (we were all wanting for some Jude Law...), and there is a bit of dialogue that I'm curious about.

You're all familiar with the scene after the dock explosion, when Holmes is disguised as Watson's doctor and is trying to evade Mary.  She comes out into the hallway and yells "Please!"  He stops, and she draws closer, saying a few lines that  I don't remember word for word.  Then this exchange takes place:

Mary:  He'd say it was worth the wounds.
Holmes:  *indistinct mumble*  -  *walks away*
Mary:  Solve this!  Whatever it takes.

On more than one occasion I've tried replaying that snip over and over, attempting to understand what it is he says.  There's nothing in the subtitles that helps.  Does anyone have any ideas as to what it is that Holmes is mumbling under his breath?

((My only guess is that it sounded something kinda of like: "I should have known."  But that doesn't completely make sense.))