"Dexter: Original Sin," a new series starring Patrick Gibson as a young Dexter Morgan, is coming to Paramount+ with Showtime.

Pretty Little Liars: Original Sin is currently streaming on Max and Max (Via Hulu), where you can watch the newest season of the show before it returns. Max (Via Hulu) (Two seasons, 18 episodes): Watch for free with a subscription.

Dexter: Original Sin has cast Matthew William as an undisclosed character, but there's a chance he could be playing key character, Tom Matthews.