If you use this variant, at the start of the game, give the inquisitor token to the player to the right of the first leader.

Immediately after the second, third, and fourth missions, the player with the inquisitor token chooses one other player and looks at that player's character card. After doing so, the player whose card was examined receives the inquisitor token.

If you are the inquisitor, you can't choose to look at the card of someone who themselves had the inquisitor token at any earlier point in the game.