Hi Terry, this is from an older post by MaG, see if it helps you:
You have to turn on-off lights so that the monitors will form the letters.
From the walkthrough:
Monitors: See that the lit monitors can form 2 letters. Try to see which monitors should be lit or unlit to form W C.
Room lights:
The bar light should be on (small monitor at second from left column).
The laundry lift room at second floor (top monitor second from left column) should be off.
The TV room light (monitor middle at last column) should be off.
All the rest of the monitors should be on.
Check those rooms that need to have light switch adjusted.
When correctly done, watch Bladder see the letters WC on the monitor and runs out. He could not hold it anymore.
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"Bleat, Watson -- unmitigated bleat!" ~ Sherlock Holmes