"So blown away by Brendan's magic, we wrote him a part" — James Corden

A nasty, insecure news editor, pushed to the edge

A doctor with a secret, finally breaking through

A duel with the magnificent Helen McCrory

Evelyn's suspicions in Downton Abbey's first season

One of the Thursday Twins in "The Crimson Horror"

A man of modesty and dignity, lacking only self-confidence

An MI5 spy catcher in post-war Britain

A young Winston Churchill, opposite Mel Gibson's Professor