When does The Frankenstein Chronicles return?

The Frankenstein Chronicles is a British television period crime drama series. It was designed as a re-imagining of Mary Shelley's 1818 novel Frankenstein; or, The Modern Prometheus. It follows Inspector John Marlott, a river police officer who uncovers a corpse made up of body parts from eight missing children. The first series consists of six episodes which opened to critical acclaim and drew an average 250,000 viewers per episode. A&E subsequently acquired the series for broadcast in the United States, describing it as "thrilling and terrifying"