'General Hospital' Emmy Winner Maurice Benard to Guest Star on 'Castle'

Jonathan Silverman, Maurice Benard and Nathan Fillion on the set of Castle.

General Hospital star Maurice Benard revealed on Instagram that he would be making a guest appearance in an upcoming episode of ABC primetime hit Castle.

"On my way to film @Castle_ABC Love the show excited to do something different," Benard posted on Instagram on Friday morning. Later in the day, he updated fans and posted a photo with Jonathan Silverman Castle star Nathan Fillion (ex-Joey Buchanan, One Life to Live). "It was a blast working with these two pros and the well oiled machine that is @abccastle @natefillion @jonnysilverman"

Benard's appearance on Castle has not yet been scheduled. We Love Soaps will post the air date in our Guest Star Guide when it becomes available.

Benard has played Sonny Corinthos on ABC's General Hospital since 1993. He recently opened up about his battle with bipolar disorder on an episode of The Dr. Oz Show. Watch below.