He's at the back of the seating area suddenly, watching intently as Tam crosses to the podium. The time is not quite right - there's a balloon vendor blocking part of his view and a harried teacher trying to seat twelve chattering eight-year-olds in the aisle. He can wait.

If anyone glances over they'll see just another guy on the fringes of the crowd, munching popcorn.

If they look back, he'll already be gone.

He's really beginning to enjoy this.