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ArchiveJuly 26, 2026Mastermind
Case File · Cipher · No. 030

Daily Casefile · Cipher

The Reed Bed Reckoning

9 min

At dawn, reserve warden Cassie Obi opened the birdwatching hide to prepare for the morning survey group and found the sighting log book shoved off its shelf and a folded card wedged into the slat gap beside the viewing window. The card bore a short sequence of uppercase letters pressed firmly in ink, as though written in a hurry.

The scene

Fernmoor Wetland Reserve — the birdwatching hide at the edge of the reed bed, a timber-slatted shelter overlooking the main marsh

Possible authors

  • Margot VaneOrnithologist and Reserve Trustee
  • Bramwell SetchVolunteer Ringing Coordinator
  • Prisha NoorWetland Ecology Consultant
  • Cledwyn MarshReserve Photographer and Seasonal Volunteer

Play today’s Cipher.

This case first aired on July 26, 2026. A fresh cipher runs every morning — same rules, five minutes, one solution.