Are you baffled by the missing Key of Apostate in Hollow Knight: Silksong? This particular item is in a far-flung region, a location which you might not expect. Getting there, naturally, takes a bit of effort. Our guide has all the details to help you obtain what you seek.

Where to find the Key of Apostate in Hollow Knight: Silksong – The Slab locked doors guide

The Slab is one of the regions of Pharloom and you should definitely visit it if you want to obtain the Faydown Cloak double jump ability. While you’re exploring, you’re bound to pick up items like the Key of Indolent and Key of Heretic. However, you’ll also notice that other doors remain locked and they require the Key of Apostate.

Key of Apostate location

The Hollow Knight: Silksong Key of Apostate can be found in the Putrefied Ducts region, which is actually in the top-right corner of the world map:

• You can either take the lower-right exit from Memorium or the topmost exit from Bilewater.
• Putrefied Ducts has numerous hazards, including carnivorous vines that pull at gobble up Hornet. Once you reach the zone, you need to go to the lower-left section of the zone. It’s also where you’ll meet the Huntress NPC for the Broodfeast quest.
• The Key of Apostate is in a small nook at the upper-left corner of the chamber.

What lies beyond the Key of Apostate rooms

Once you have the Hollow Knight: Silksong Key of Apostate, make your way back to The Slab. You should now be able to unlock the two remaining doorways:

• The door at the bottom of the shaft–i.e. the one that’s closest to the bench and fast travel point–leads to an eerie chamber with a cell with multiple chains. If you break these chains, you can battle the First Sinner boss. Defeating her nets you the Rune Rage silk skill.
• The door at the top-right portion of the shaft has a fairly annoying jumping/traversal segment. Your goal is to pogo on the spinning bladed wheel. Once you get to the very top, you’ll find a Mask Shard health upgrade.

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That does it for our guide on where to find the Key of Apostate in Hollow Knight: Silksong. If you’re keen on roaming around the dark lands of Pharloom, then you might want to read our articles about other secret areas such as The Mist and Lost Verdania.

Play as Hornet and brave the dangers of the Kingdom of Pharloom. If you need help with various secrets and challenges, you can always check our Hollow Knight: Silksong guides hub.

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