
Clara Finch brings a broom to the salt map because the tunnel it marks reaches a ledger room she claims was bricked shut.
Clara wants the map gone before Cal hears where the final measure points.
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More discoveries

Nora Vale can read the salt map because the Night Choir notation was written into the restoration notes she stole.

Rowan Cross turns the red signal into a bargain: confess to a smaller charge now, or let tomorrow's verdict become permanent.

Rowan Cross will let Adelaide use the third key if she names Elias as its maker before she knows what the room contains.

Rowan Cross can cancel the mirror pass, but he also knows why Livia March's face still opens Ashwick doors.