In April 1986, an explosion at the Chernobyl nuclear power plant in the Union of Soviet Socialist Republics becomes one of the world's worst man-made catastrophes.

Follow Adam and Emma on their daily commute from the village of Langton to London, where they meet the same passengers every day. One morning, Adam breaks the unspoken taboo of talking to strangers on a train and invites the entire carriage to hold their own Christmas party together.

A faithful Jehovah's Witness is forced to shun her own sister because of a religious transgression. As the separation draws out, she starts to question the meaning of God's love.

Foreign mercenary Guido Fawkes, and a group of English Catholic traitors plan to blow up the Palace Of Westminster and kill King James I in the early 17th century.

Far from home, Jason washes up on the shores of the ancient and mysterious city of Atlantis.

Struggling mum Sam discovers access to lucrative stock market information while working as an office cleaner at Canary Wharf.

When their son starts acting strangely, a couple unwittingly allow dark and sinister forces into their home, awakening a long-dormant ancient evil rooted deep in the countryside.