Sarah Wayne Callies (Colony, The Walking Dead), Shawn Doyle (Bellevue, Big Love), Michael Shanks (Stargate SG-1, Saving Hope) and Camille Sullivan (The Disappearance, The Man in the High Castle) have been cast in Unspeakable, an eight-part miniseries set for premiere on CBC in Canada and SundanceTV in the U.S. Production begins this spring in Vancouver.

Created by Robert C. Cooper (Dirk Gently’s Holistic Detective Agency, Stargate SG-1, Stargate: Atlantis) and based on first-person experience and non-fiction books, Bad Blood by Vic Parsons and The Gift of Death by Andre Picard, Unspeakable chronicles the emergence of HIV and Hepatitis C in Canada in the early 1980s and the tragedy that resulted after thousands of people were infected by tainted blood. One of the largest medical disasters in Canadian history, the blood scandal triggered a federal inquiry and precedent-setting lawsuit resulting in billions of dollars in compensation to victims.

A CBC and SundanceTV original series, Unspeakable is produced by Mezo Entertainment, with Cooper and Meridian Artists’ Glenn Cockburn serving as executive producers

AMC Studios will manage worldwide distribution outside of Canada.