Pretty_little_liars_3x06 (ULTIMATE × WALKTHROUGH)

: Spencer realizes the blueprint is dated months before the construction of that wing actually began.

In the Pretty Little Liars episode "The Remains of the 'A'" (Season 3, Episode 06), the "interesting paper" most likely refers to the found by Hanna and Spencer . Pretty_little_liars_3x06

: It also deepens the mystery surrounding Toby’s mother, Marion Cavanaugh, suggesting that the "accidents" at Radley were planned or covered up long in advance. : Spencer realizes the blueprint is dated months

Another notable paper trail in this episode involves the Hanna finds in Wilden’s car, which places him in a different location than he claimed during the time of the "remains" discovery. Pretty_little_liars_3x06