The Doctor discovers there's more than one alien interfering with industrial progress of 19th-century Earth.
After following Thomas Brewster to Samuel Belfrage's brass mill in Ackleton, the Doctor and Evelyn have discovered some unexpected truth about his business.
Starring Colin Baker as the Sixth Doctor, Maggie Stables as Evelyn Smythe, John Pickard as Thomas Brewster, Rory Kinnear as Samuel Belfrage, Stephen Gibson as Warren Brown and Joannah Tincey as Clara Stretton.
Writer: Eddie Robson
Producer: Nicholas Briggs.
A Big Finish production. Show less