A door sealed shut from the inside with stakes driven in and surrounded by protective runes — deliberate containment magic (confirmed magical, level ~2, not a trap). The party reads it as something locked in on purpose and decides not to dispel it. Shakim the mummy is the prisoner behind it (or behind the related door).
Most recently recorded in S37.
No open hook is currently recorded.
No open hooks are currently recorded.
No player-visible relationships are currently recorded.