Possible spoilers?? Uriks Depths chase the lever puzzle.

[sodacandan]

Am i blind because i can not find the lever to get one of the locked doors open to get to the bookcase. Does anyone know where it is?

[Alliances]

Sodacandan:

Now in respond to your question, i could also ask you in return a question: How did you know there was a bookcase behind that locked door by a secret puzzle if you never went there before (since you don't seem to know where all the lever are to open it) and since places you never went don't appear on your map ? MmmmMMM ? ( ͡° ͜ʖ ͡°)

Smell like someone's been trying to go around the "fun" of discovering secret things by themselves first i belive. -_^ Ha ha ha ha ha !!!

Now don't take it bad, i'm just jokingly teasing you. ^_^
All jokes aside, there is multiple lever to solve this puzzle. Some are readily accessible from the start, but one is only accesible after the Trogylork's bridge fight once the blacksmith shop is open.
Since we don't know which lever you pulled and which one you didn't, it's a bit hard to answer to your question.

The first chain of lever start in the room where that locked door is. My best advice to help you found which one your forgot to pull, is to go around all of Urik's depth, (Not the second level where the temple is tough) and use the "TAB" keybind on your keyboard to highlight interactible object in the background.
With that, you should be able to eventually find the lever you missed. Don't hesitate to search all the way in all the tiny corner of Urik's depth. Some of them are really tricky to find and well hided.

One last thing. Once you activated the last lever, the door doesn't open right away. You have a secondary puzzle you have to figure out in front of the locked door with two strange statue that are guarding it.
Now that i think about it, maybe you should just check that in the first place. Unbeknownst to you, maybe you already pulled all the lever and the only thing left to solve for you, it's the statue puzzle in front of the door.

Good luck Sodacandan and happy searching/solving!! ^_^

[sodacandan]

^Thank you i didnt even know about the TAB hotkey