Credit: Twitter

Look who’s joining Caleb Rivers in Ravenswood, Pretty Little Liars fans!

ABC Family recently announced Brett Dier (The L.A. Complex) and Elizabeth Whitson are joining the cast of the Pretty Little Liars spin-off as twins Abel and Olivia. PLL fans will meet the new faces during the Pretty Little Liars Halloween episode.

Abel is a lone wolf with an old soul whose trust is hard won but who is loyal until the end, while his twin sister Olivia is a once carefree spirit who has recently experienced hardship, leaving her questioning what’s important and what no longer matters. Is it just us or will Olivia and Caleb have a lot to talk about?

From the Pretty Little Liars Powers That Be — I. Marlene King, Oliver Goldstick, Joseph Dougherty, and Leslie Morgenstein — Ravenswood will follow five strangers who suddenly find themselves connected by a fatal curse that has haunted Ravenswood for generations. They must dig into the town's mysteries and terrible history before it's too late for each of them.

It looks like Brett has already received a warm welcome from his Ravenswood castmate Tyler Blackburn.

@Brettdier duuuuude! I'm so stoked and happy for you! Everyone follow my newest cast mate in @RavenswoodABCF playing Abel!” Tyler tweeted. Brett responded: “Thank you @ABCFpll and @RavenswoodABCF fans for the warm wonderful welcome! Much love to you all!”

Aw! Welcome to Ravenswood, Brett! Watch out — we hear things are a little spooky over there.

What do you think about this casting? Will you watch Ravenswood? Sound off in the comments!