Pretty_little_liars_3x06 -

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

Here is why that specific piece of paper was so significant: 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

: This paper leads them to discover that a room was built into the sanitarium that wasn't on the official public records—a room that "A" (Mona) was using to sneak in and out of the facility. Pretty_little_liars_3x06