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ArchiveJuly 12, 2026Mastermind
Case File · Cipher · No. 016

Daily Casefile · Cipher

The Locked Greenhouse

9 min

A handwritten note was discovered wedged into the door handle of the university's locked greenhouse early Sunday morning. The head botanist reported it to campus security, who photographed it before anyone could disturb the scene. The note appears to be a warning, but its meaning has been obscured by some form of encoding.

The scene

A botanical research station on the outskirts of a university campus. A threatening note was found pinned to the door of the locked greenhouse where a rare orchid collection is kept.

Possible authors

  • Miriam VossRival Botanist
  • Pete LarkinGroundskeeper
  • Clara ChenGraduate Student
  • Ford OkaforProperty Developer

Play today’s Cipher.

This case first aired on July 12, 2026. A fresh cipher runs every morning — same rules, five minutes, one solution.