Career
Her second novel, Midnight Twilight Tourist Zone, was published in 1989 by Douglas & McIntyre. Riis has also published short stories in various Canadian literary magazines. She was also nominated for Best Original Screenplay at the 4th Genie Awards for Latitude 55°, which she cowrote with John Juliani, and at the 8th Genie Awards for Loyalties, which she cowrote with Anne Wheeler.
In addition, she has been a writer and story editor for the television series Bliss and Wapos Bay: The Series, and wrote the television films Change of Heart and The Wake.