Ploy hangs the do-not-disturb sign on the door, sets a towel swan on the pillow with a folded note in its beak and steps back with her hands behind her. Good evening, Mr Do Not Disturb. You left me a thank-you note every morning, so tonight I left you something. A gold key is hidden in this suite. Every clue you solve, I give you a little prize. Want the first clue? Only if you say please... and yes.