Day 752

There had been odd noises coming from the classroom pipes for as long as the staff could remember.  No matter how many times they were disassembled these noises persisted, even when the entire water system was replaced with a brand new everything. It was described most commonly as a cross between scuttling, flushing liquid and garbled attempts at speech.

The staff played it off as a recording in the popes put there as a practical joke that they'd never been able to fish out. Students fell for it for about half of their first year before realising the sounds were too clear to be any kind of recording. It was only made worse when a couple of older students decided to knock on the pipes, not expecting a reply.

From then on there would be knocks coming from inside the pipes, in every classroom but especially room 008A. It was a fairly small classroom used mainly for exams and the closest to the boiler room where the sounds could be heard clearest and if you stayed long enough you'd hear something metal being unscrewed from no apparent source.