Cillian Murphy

The action has moved on two years to 1924 and as Tommy starts married life he is more determined than ever to go legitimate and keep his family safe. But he finds himself pulled into a web of intrigue more lethal than anything he has yet encountered.

Season 4 opens in December 1925. When Tommy receives a mysterious letter on Christmas Eve, he realises that the Shelbys are in danger of annihilation.

In 1929, while his family deals with the repercussions of the Wall Street crash, Tommy Shelby MP faces new dangers from unexpected quarters.