Finding the Apostate Key location in Hollow Knight: Silksong is surprisingly difficult. For those who didn't get kidnapped by The Slab's jailers earlier in the game, you'll first encounter this area heading left out of the Choral Chambers in Act 2. The only thing is, most of the region is locked behind a door that requires an Apostate Key.
If you want to explore what dark and dingy secrets this prison region has to offer, you'll have to hunt it down. That being said, here's where to find the Apostate Key in Silksong and how to get to the areas it's in.
