Also featuring Peter Mullan, Mark Gatiss, Tom Cullen, Edward Holcroft, Shaun Dooley, Robert Emms, Derek Riddell and Pedro Casablanc, the program takes place in 1603 England.
"Elizabeth I is dead and King James of Scotland has taken the throne. With the country at war with Catholic Spain, English Catholics are persecuted and priests caught saying Mass are punished with death," a synopsis said. "Several attempts have already been made on the new king's life. All, so far, have failed. But deep in the heart of the Warwickshire countryside a new plot is brewing. A plot that will become legend, and leave a mark on the country that will still be felt over 400 years later."