As you are playing Zweihander hint at some truth(s) that has been hidden from everyone. This could be the man in the iron mask or a family that is keeping something hidden or even the character being pulled into a cult/secret society, like the knight templars or masons. If you want to be on the evil side of things, you can corrupt him with the black arts.
Something simple to do is to provide the players with props, like a decoder ring and then drop coded messages into the game for the player to decode between games.
Something simple to do is to provide the players with props, like a decoder ring and then drop coded messages into the game for the player to decode between games.