TV Guide reports that the actor will be returning for two episodes of the summer soap, meaning viewers may get the chance to find out what's in store for his alter ego, Scott, after getting ditched at the altar.
As fans may recall, season two of the series ended with Joss (Jes Macallan) and Harry (Brett Tucker) hooking up on the beach just outside of Joss and Scott's wedding.
"A lot of where Season 3 starts is dealing with what the massive repercussions that choice will bring," Macallan said. "We know it's going to be wrapped up, but we don't know how they're going to handle it."
To find out, be sure to catch the season three premiere of Mistresses, debuting this summer on ABC.
What do you think about Hartley returning to Mistresses? How would you like to see Scott's story play out? Share your thoughts in our Comments section below, on our message boards, or by submitting Feedback.