Mansions of Madness: Sanctum of Twilight – The Order's Dark Secrets

Infiltrate the Silver Twilight Lodge, uncover an ancient conspiracy, and face Arkham's most dangerous secret society — a focused two-scenario expansion with stunning new investigators.

Mansions of Madness: Sanctum of Twilight is a focused, atmospheric expansion that takes investigators deep into Arkham's most dangerous secret society — the Silver Twilight Lodge. Published by Fantasy Flight Games in 2018, it delivers two tightly crafted app-driven scenarios centered on the Lodge's hidden rituals, ancient conspiracies, and the terrifying truth behind Arkham's most respected social institution.

Sanctum of Twilight is the most thematically focused Mansions of Madness expansion. Where Streets of Arkham opens the city to exploration, Sanctum drills deep into a single chilling mystery — the kind that feels pulled directly from a classic Lovecraftian short story. The two new investigators introduced here, Charlie Kane and Lily Chen, have become fan favorites in the Arkham Horror Files universe.

Players who experience Sanctum of Twilight consistently describe it as the most narratively satisfying Mansions of Madness expansion — the Silver Twilight Lodge mystery unfolds with the escalating dread of classic Lovecraftian fiction, and the moment investigators discover what the Lodge is truly planning is one of the game's most memorable revelations.

What Does Sanctum of Twilight Add?

How Does It Play?

Sanctum of Twilight's two scenarios both center on the Silver Twilight Lodge — Arkham's most exclusive and secretly sinister social club. In one scenario, investigators must infiltrate the Lodge's gala while gathering evidence of its dark practices. In the other, they must stop a ritual that threatens to tear open the veil between worlds.

The Silver Twilight Lodge theme creates scenarios unlike anything else in the Mansions of Madness library. Instead of fighting monsters in haunted buildings, investigators must navigate social situations, gather hidden clues, and avoid drawing the attention of Lodge members who appear perfectly ordinary — until they don't.

Charlie Kane's political abilities make him uniquely effective in these scenarios — his connections and influence open doors that brute force cannot. Lily Chen's martial arts combat style makes her the group's best defender when the Lodge's true nature is finally revealed. Both investigators add meaningful strategic variety to any Mansions of Madness session.

Rating Breakdown

Pros & Cons

Who Is This Expansion For?