Elias Vale, Dr. Rowan Mercer, and Mara Bell outside 221B Baker Street

CASE 221-B · INTERACTIVE CIPHER MYSTERY

The Message
Under the Stair

A telegram vanished inside a locked townhouse. Decode the carbon copy, test the evidence, and tell the Baker Street team where to search.

HOW TO INVESTIGATE

Read. Rotate. Deduce.

  1. 01
    Inspect the evidence.

    Each item reveals one useful detail and advances the case.

  2. 02
    Find the alphabet shift.

    Use the repeated words and the household record to set the wheel.

  3. 03
    Run the decoder.

    A correct shift turns the entire telegram into readable English.

  4. 04
    File the conclusion.

    Enter the complete message to close Case 221-B.

CASE 221-B · CLOSED

The stair gave up its secret.

The Baker Street investigative team

The missing telegram was concealed where the shadow crosses the lower stair. Your deduction put the team there before midnight.

Your time
00:00
Evidence
3 / 3
Best time
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