5. Field trip gone wrong

Percy goes on a field trip to a Greek history museum.  While in the museum, his teacher, Mrs. Dodds, turns into a fury.  She almost kills Percy. Luckily Chiron, another one of Percy’s teachers, gives him a pen. When you uncap the pen, it transforms into a sword. Percy fights the fury with all of his power.  Once Percy got back to the outside of the museum and told everyone about Mrs. Dodds, they replied by saying that there was no such teacher.  All the children’s minds were wiped clean of Mrs. Dodds.