: High-quality digital sketches and development "papers" showing the game's design process.

For , the primary "paper" content refers to the integrated Official Strategy Guide and digital extras included with this special release by Elephant Games . Essential Strategy & Guides

This edition includes various collectible and artistic extras typically found in the game's "Extras" menu:

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: Includes step-by-step instructions and solutions for all Hidden Object Puzzles (HOPs) and mini-games.

The "paper trail" in the game follows detective Amber as she investigates eleven mysterious deaths in Serpent Hill, continuing the work started by her late brother.