Part of Investigating Mechanic

I've used matinee and kismet to create a way for the player to read report screens and maps which is part of the investigation bit of the game mechanic, and the HUD elements disappear when cinematic is activated and returns when it is done.

Now I want to get it so that the player can activate and end the cinematic by pressing the user key, but so far I haven't figured out how to do that.