General Hospital's executive producer, Frank Valentini, confirmed the news to Soap Opera Digest -- and assures fans that McCullough's return won't be a one-day stunt. The actress has been signed to a contract, but the length of her return is undisclosed.
"Robin is such an important part of the history of General Hospital," Valentini told Digest. "It will be so wonderful to see her come back and what that effect will have on the canvas."
McCullough shared her enthusiasm on Twitter, saying, "The news is out and I'm stoked! I've missed my GH Family something fierce."
In February 2012, McCullough exited GH to "pursue her dream of directing full-time." As part of the actress' farewell, McCullough documented her farewell in taped interviews with her costars, which were later posted on the Internet.
At the time, Robin was believed to have been killed in an explosion at General Hospital. A month later, in a storyline bombshell, Robin was revealed to be very much alive and held captive.
Last month, McCullough completed a successful Kickstarter campaign for Creve Coeur, MO. (a.k.a. Broken Heart, Missouri), described as a dark comedy exploring three generations of love stories and the darker side of the white picket fence in Middle America circa 1993.
McCullough originated the role of Robin Scorpio in 1985 when she was just seven years of age. McCullough has earned two Daytime Emmy wins during her time with General Hospital. The actress was named Outstanding Younger Actress in 1989 and 1996. McCullough's character also briefly crossed over to All My Children in 2001.