The class was looking forward to this school trip to the sea. Even though they had to spend a few hours each day clearing the shore of rubbish, it seemed a small price to pay for all the other time they could spend having fun. Provided, of course, that they were careful not to get caught by the watchful teachers.

It was the first night of their stay at the small coastal hotel and the girls and boys went to their rooms, waiting for the teachers to make their rounds and go to bed with a sense of accomplishment…