 Chellas was the co-creator with Ilana Frank and executive producer and head writer of the Canadian prime-time dramatic television series "The Eleventh Hour", two-time winner of the Gemini Award for Best Series.Chellas and Tassie Cameron shared the Gemini for Best Writing in 2005 for the series finale, "Bumpy Cover".As well as being critically acclaimed, the series was nominated for over 30 other Geminis and won nine.