Progressive help · no full solution

Understudy: spoiler-light hints

Open these in order. Each hint narrows the evidence chain without naming the culprit or the final answer.

  1. Hint 1
    Reveal hint 1

    A credential identifies what opened a door, not necessarily who held it.

  2. Hint 2
    Reveal hint 2

    Compare the serial number of the working relay with the one installed before blackout.

  3. Hint 3
    Reveal hint 3

    Find who gains if the performance is cancelled, not merely who gains the role.

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