This page contains Agatha Christie: And Then There Were None Hints for PC - Windows called "Safe puzzle" and has been posted or updated on May 22, 2007 by dmboatr1. Let us know what you think of this Hint by thumbs voting.
Once the safe has been opened, inside is a small drawer with slots with the letters A, E (3), H, L, R, S, T, U, V and W. Notice the poster above the radio just outside the safe. You will find the answer there in a song that Patrick sings. The answer to open this second hidden door is: Rule the Waves.
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