The Peaky Blinders come under fire when Tommy finds danger on his doorstep and a friend is brutally attacked. Could there be a traitor in the Shelby family’s midst?

Tommy is at Arrow House when he receives a call from a mysterious new ally with potentially devastating information. At Westminster, in a dimly lit bar, he, Ada and Mosley meet to discuss business.

Meanwhile, a rival gang, keen to send a message to Tommy, use brutal means to do so. At the Garrison pub, Arthur and Finn reveal their plans to expand the Peaky business empire. Later, a birthday celebration is interrupted by the unexpected arrival of someone close to Tommy with a message about a dangerous new enemy.