do you keep summoned demons in between games

[sunspear]

Once a demon or demons have been summoned do they stay with th warband throughout games? If Ive missed it in the rulebook, I'm sorry

[tys123]

No Summoned demons disappear after the game.
If you know Summon Demon and Bind Demon and have the right stuff in your base you can try and summon a new one before each game though.

[MaineQat]

You don't need Bind Demon; Summon Demon automatically binds it if you succeeded.

Additionally, Summon Demon is not an Out of Game spell.

If it takes a Soldier slot, it's permanent, otherwise it's not, even if it is an Out of Game spell.

Constructs and Animal Companions are permanent between games, and they take a Soldier slot.  The spells both state as much.

Summon Zombie is available Out of Game, but the Zombie does not take a Soldier slot, and it disappears at the end of game.

Summon Demon is not Out of Game, and it does not take a Soldier slot.

[tys123]

Read Summoning Circle.

It turns Summon Demon into an out of game spell but you also need to cast Bind Demon.