The archive's prized atlas was checked out under a false name and came back soaked, fished from a whirlpool. Three students had library cards that week. Whoever took it swimming has explaining to do.

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• CLUE 1 - Ruth was serving the Dining Hall lunch line her whole shift.
• CLUE 2 - Marco was locked in the Archive Cage, serving a detention.
• CLUE 3 - The water-logged atlas was fished out of a whirlpool.
• CLUE 4 - Whoever was in the Archive Cage was not the one carrying the library card.

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