Purify the apartment key and leave it behind to recover Julia's memories. Julia's Desiderium in Tenebris Somnia is an altered version of the school, where familiar people and writing are hard for her to recognize. First, get the RCA cable working so you can reach your belongings again.
How do you change the RCA cable from blue to yellow?
Change the moon-and-sun setup to bring out the sun, then use the yellow RCA cable with the camera equipment. The blue cable does not work: Julia points out that it should be yellow when you try it beside the camera.

- Leave the camera equipment and change the moon-and-sun setup elsewhere in the altered school.
- Return once the RCA cable has turned yellow and use it with the camera equipment.
- Interact with the thick hanging cable and choose to climb.

After climbing, recover your belongings in the room with wires across the floor. Julia recognizes her things beside the open container on the right.

How do you remove the apartment key's Tenebris Somnia spell?
Purify the enchanted apartment key, then leave it behind; keeping its spell active blocks Julia's memories and makes writing blurry. The purification follows the same principle as the film can: purified water breaks the enchantment.
- Return to the purified water in the altered school. You first see its remains behind glass, across from the bookshelves.

- Purify the apartment key there and leave it behind. Julia announces that the purification worked, then feels old, forgotten memories returning.

- Read the old book again. Its pages become legible after you get rid of the key, and Julia notices her mind clearing.

The effect is gradual: Julia initially describes the returning memories as still somewhat blurry. Keep exploring the memories after purification.
Where is the red candle in Julia's restored memory?
Take the red candle from the statue representing Julia in the restored screenwriting memory. Return to the classroom scene around the script table after leaving the key behind.

Julia now remembers working on the script with Ivan and Andres. Ivan credited only himself, and Andres stopped speaking to them after the premiere. Julia recognizes that the key had been locking away this memory, which is why revisiting the scene matters.
Where do you find the Lead fly after the dripping maze?
Collect the Lead fly from the hands of Julia's statue in the screening room reached after the maze. The statue represents her watching the short film, with an expression that shifts between excitement and fear.

On the way, watch for the lead covering receding to reveal another material. Julia also hears something break in the next room; check that room again when the obstruction changes.

The dripping maze comes before the screening-room pickup. Pay attention to where the dripping appears as you work through the rooms. Once you reach the screening room, inspect the statue's hands for the item.
Later, Julia recognizes the painful filming scene as her own memory. Ivan's phone chat also becomes readable: it explains that the Tenebris Somnia spell was cast on his apartment key and replicated onto hers, blurring the worst memories of their relationship.

With the key left behind, the book readable, and the red candle and Lead fly recovered, continue to the Forging the Aurifer walkthrough.