My brother's first GMing gig was also Top Secret, but the newer version that had the Casino Royale gambling rules. I believe he was running an adventure that came with the boxed set. My friend and I were the only players.
We were tipped off that someone was going to blow up a national landmark in San Francisco. We could never figure out what the target could be. Chock this up to player brain-fart, but it probably didn't help that we were more interested in gambling at the casino (not sure where, I thought we were in California) than hoofing around investigating.
So, yeah, we played roulette while terrorists blew up the Golden Gate Bridge. End of adventure.