✦ Craft & Quest

Tenebris Somnia · Cursed Film Canister

Cleanse the cursed canister with moonlight-purified water

On this page
  1. Touch the cursed canister twice, then ask about SPELL
  2. Open the bathroom cabinet, then collect three doses
  3. The Pentacle Stone opens two relevant doors
  4. Moonlight, not an extra dose of water
  5. Check the missing stage before retracing everything
  6. Sources and version

Fill the Silver Bottle from three save points, then use it at the hotel window beside the Julia statue. The resulting Purified Water cleanses the cursed canister in the film school. A bottle filled with ordinary water is only the intermediate item.

PC full release · Research checked October 22, 2026 · Midgame item, save-point and boss-reward spoilers

Touch the cursed canister twice, then ask about SPELL

On the film school’s first floor, enter the room through the left blue door and interact with the Film Canister on the table. It sends you to the Studio Lobby. Return to the canister and repeat the interaction. After the second teleport, Sanguis is waiting in a lobby chair.

Exhaust his opening dialogue, then choose SPELL and continue that conversation until he adds the information to the Old Book and gives you the Silver Key. Seeing him in the chair is not enough; the key comes from completing the relevant dialogue branch.

The classroom with the cursed Film Canister on a central table
The canister first triggers the teleports. Repeat the visit before expecting Sanguis’s Silver Key conversation. Image: Metadata Rosenberg and Dalia’s Puzzle and Boss Guide. Tenebris Somnia © Andrés Borghi / Saibot Studios / New Blood Interactive. Select to enlarge.

Open the bathroom cabinet, then collect three doses

Use the Silver Key on the locked cabinet next to the sink in Ivan’s Floor 2 bathroom. Take the Silver Bottle. The source’s suggested collection route is:

  1. The Floor 2 apartment bedroom save point.
  2. The Floor 3 apartment office save point.
  3. The Floor 2 director’s-office save point.

Use the bottle at each point. After the third, check for three doses of water. The achievement record describes this as removing three save points, so make a deliberate save before starting the collection and do not assume those exact points remain available for saving afterwards.

Sanguis giving Julia the Silver Key in the studio waiting area
Silver Key is the cabinet key, not the bottle itself. Visit the Floor 2 bathroom cabinet after this conversation. Image: Metadata Rosenberg and Dalia’s Puzzle and Boss Guide. Tenebris Somnia © Andrés Borghi / Saibot Studios / New Blood Interactive. Select to enlarge.

The Pentacle Stone opens two relevant doors

Defeat Fumus and collect the red Pentacle Stone. Back at Ivan’s Floor 3 apartment, use it on the bathroom door. The Chemicals on the table to the south will be useful for the later photograph puzzle, so collect them while you are here.

Return to Floor 2, enter the far-left door into the Studio Lobby, and use the Pentacle Stone on the white door with the red symbol. If you already used the stone on Ivan’s bathroom, it crumbles after this second use. That is the documented sequence, not a sign that you should find another Pentacle Stone.

Moonlight, not an extra dose of water

In the hotel room, finish the dialogue and approach the window beside the Julia statue. Use the Bottle With Three Doses of Water at the window. The moonlight purifies it.

Julia beside the hotel window and Julia statue
Stand at this window with the three-dose bottle and use it. The window interaction changes the contents into Purified Water. Image: Metadata Rosenberg and Dalia’s Puzzle and Boss Guide. Tenebris Somnia © Andrés Borghi / Saibot Studios / New Blood Interactive. Select to enlarge.

Take the Purified Water back to the first-floor film-school room with the cursed canister. Use it on the canister to cleanse it and receive the third and final Film Canister. You do not need to continue touching it bare-handed and repeating the teleport once you have the correct item.

Check the missing stage before retracing everything

Once Devora 3 is yours, the projector can unlock the final theater box containing the Cold Chisel. That connects directly to the red-bulb and photograph route.

Sources and version

Source-based walkthrough for the PC full release, checked October 22, 2026. Route reference: Metadata Rosenberg and Dalia’s Puzzle and Boss Guide, sections 14–17.. Renka’s achievement guide documents the three-save-point removal condition for Have You Chosen… Wisely? and the three-canister Devora achievement. Gameplay excerpts are credited in their captions. Check the official update feed if your installed version behaves differently.

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