Like some kind of mysterious octopus, A will continue to spread her tentacles on this Monday's new episode of Pretty Little Liars.

As depicted in the following sneak peeks at "Breaking the Code," viewers can look for A to make contact with Mona and with Aria's parents, expanding her harassment to include new targets in Rosewood. How will the girls react? What secrets are they afraid might come out?

We need to wait a few days for the answers, but check out the clues dropped in the clips below now:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.