The plaque on the wall says:
I spy with my little eye:
One who has things to hide,
One who lives with wounded pride,
One who lives in constant fear,
One who wants no one near,
Two who lie and two who don't,
Two I trust and two I won't.
It's hard to trust the liars, yes,
But I'm afraid that is the test.
Still they'll have to trust you too,
Since they must confide in you.
The room is bare, save for two tables and one, bright light above. If anyone tries to walk out of the light, the light simply expands to accommodate them. All four participants must remain in the light at the same time. There is nowhere to sit, and even if they walk endlessly, they will reach no doors and no walls.
One each table there is a box with one gun and one bullet. Each box is locked to begin with, and the word Confide
is emblazoned on the lid of each of them.( Directions. )