An unnamed Vesper agent infiltrated the reading of Grace Cahill's will to gain information on the Clue hunt. She kidnapped and assumed the identity of the Cahill Ingrid. She stole the real Ingrid's medallion, although her disguise was not perfect, as she was wearing combat boots. Later, when the Holt family lit Cahill Manor on fire, she became stuck in the floorboards, but was rescued by Hamilton Holt.

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