Tome Alone is the second case in The Darkside Detective by Spooky Doorway. Kongregate(free demo). Steam (paid full).
To get a better understanding or just for fun, you can read all the dialogue but not all is necessary to solve the case.
Case 1 | Table of Contents | Case 3
Dooley suggested a visit to the library. He must have seen the strange storm gathering over it.
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Outside
After the dialogue, enter the library through the door.
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First Floor
Office
– Interact with Office Supplies, on table between the computer and the officer (+ Scissors)
– Coat Rack, next to the door to Lobby (+ Button)
Travel
Take the elevator in the lobby to Second Floor
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Second Floor
Sci Fi/Fantasy
– Library Card, the blue rectangle with a white pixel on the ground by the book shelf on the left (+ Old Library Card)
– Rocket (+ Metal Strip)
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Children’s Section
Viewmaster next to the blue Dinosaur (+ Viewmaster)
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Third Floor
Microfilm Room (Reading Room → Microfilm Room)
Use (drag item from top left corner to the desired location)
– Scissors on Box of Microfilm
– Viewmaster on Cut Up Microfilm, the same box
Interact
View the microfilms (click right arrow once you’re ready to move to the next, until all film have been viewed)moshimushi.wordpress.com
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Reading Room
Talk to Yeats
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Microfilm Room
Talk to Crowley
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Reading Room
Talk to Raxa (+Admin Password)moshimushi.wordpress.com
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Microfilm Room
– Use Admin Password on Computer
– Talk to Crowley
Reading Room
Talk to Yeats and he’ll reveal, “One of the books in the L section is a lever.”
Hobby/DIY (via Third Floor)
– Glue on the table (+ Glue)
– Use Metal Strip on Button (+ Conductive Button)
– Use Conductive Button on Gail, he will help to fix the elevator button
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Fourth Floor
Horror
After Poe and Lovecraft’s argument, talk to Poe.
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Second Floor
Children’s Section
Talk to Blyton
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First Floor
Office
– Use Glue on Old Library Card (+ Sticky Library Card)
– Interact with the photocopier (+ Photocopy)
– Use Photocopy on Sticky Library Card (+ Fake Library Card)
Lobby
– Use Fake Library Card on Librarian (+ Trashy Novel)
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Fourth Floor
Horror
Use Trashy Novel on Poe or Lovecraft
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Second Floor
Children’s Section
Talk to Blyton (+ Lovecraft Novel)
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Fourth Floor
Horror
– Place Lovecraft Novel in the middle bookshelf, K-L section
– The lever is where you placed the book. Pull it.
– Enter Spooky Doorway
Spooky Doorway
– Take the skull next to Shelley (+ Skull)
– Drop Skull into Crawl Space, the vent next to Shelley
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Second Floor
Children’s Section
The skull landed here. After the dialogue (+ Roof Key)
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Fourth Floor
Use Roof Key on Window, which is to the left of the elevator.
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Outside
– Climb up the Ladder
– Interact with the Junction Box. You need to reroute the power. Below is one way you can move the tile to solve the minigame.

You should end up with this:

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Fourth Floor
Spooky Doorway
Close the book.
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CASE CLOSED
He did not see the storm. I did get to meet some personal heroes and get a kid’s life back on track, however. That’s why I do this job. That and keeping the forces of evil at bay, I guess.