Robert Maguire was a fairly new and enthusiast high school teacher of Chemistry. In fact, he was about to begin his second year of teaching. During the long summer break he went several times to the school’s chemistry laboratory to prepare his classes for the coming year.
The last time he went, the plumber turned up.
“I’m here to check for dripping faucets,” said the plumber. “Thank goodness you’re here. Mr Gaynor, the Head of the Chemistry Department, gave me a key to the classroom but I was worried how I would get my van through the locked school gate.”
Robert Maguire was about to leave so he asked the plumber to make sure he locked the chemistry laboratory when he left, and to also firmly lock the school’s front gate.
“There have been a lot of burglaries in the area over the summer,” said Robert Maguire.