Congratulations. You have just discovered the secret message.
Please send your answer to Old Pink, care of the Funny Farm, Chalfont.
Thanks, I will try to find this in the rules.
This means, that if I have in game both retrieve character and booster, I can't return any ?
Not exactly. Only if both players have an active Character card in play that shows the Retrieve icon do they cancel each other out. Do not count any Booster/Support cards with the Retrieve icon.