A bottle of poison with a ribbon tied around it that reads "DRINK ME". When spilled, the liquid rots the floor.
In Beyond the Kingdoms, the twins and their friends travel through portal books into fictional worlds to try and stop the Masked Man. In order to get into Wonderland, they must shrink themselves to fit through a tiny doorway in the entry hall. In Lewis Carroll's Alice in Wonderland, Alice drinks a potion left by the door.
When Conner wants to take a sip of the potion he finds, Peter Pan knocks it out of his hand, breaking the bottle. He has recognized it from Captain Hook's ship, and it is poison. The Masked Man left it there for them. Instead of using the potion, Alex uses her magic to shrink everyone.
- ↑ TLOS IV, ch 19, p 251