Hidden Cache in fireplace of Heaven's Edge (Daeran's mansion)

[Miskatonic]

Says there's a keyhole, anyone know where the key is?

[Multox]

I can't find it either.

[SIlverblade-T-E]

same, no clue how to open it, do we come back to the mansion later?

Definite "haunting of Hill House" vibe there, lol