El Doctor y Clara se enfrentan a su última Navidad. Atrapado en una base del Ártico, bajo el ataque de criaturas aterradoras, ¿a quién vas a llamar? ¡Santa Claus!
Inglaterra, 1943. Los descifradores de códigos de Betchley Park, la estación X, sede de los servicios secretos británicos, se enfrentan a su peor pesadilla: inesperadamente, los submarinos nazis han cambiado el código que utilizan para comunicarse entre sí y con el alto mando alemán. Un convoy de barcos de mercancías aliado que está cruzando el atlántico con diez mil pasajeros e importantes suministros está en peligro de ataque. Las autoridades recurren a Tom Jericho, un brillante matemático y experto descifrador de códigos de la inteligencia británica, el hombre que había conseguido descifrar el anterior código nazi, denominado Enigma, empleado para la flota submarina alemana. Lo que sus colegas no saben es que Jericho tiene un enigma personal que resolver: Claire, la mujer de la que se ha enamorado desaparece cuando las autoridades empiezan a sospechar que puede haber un espía en Bletchley Park. Para llegar a fondo de ambos misterios, Jericho solicitará la ayuda de Hester.
Cardiac surgeon Alex Marsden has an affair with Marcella Duggan, but then finds himself having to operate on her husband Larry, who is also his friend.
A young orphan girl, Portia, goes to live with her well-to-do aunt and uncle. As she is groomed to become a lady, she is confused by the young man who seems to be courting her. Surrounded by pretentious people who have no clue how to deal with teenagers, she soon loses her naïveté and thinks of running away.
Nathaniel Box, a self-styled prophet, along with his daughter Barbara and her fiancé Curtis, holds a night time press conference in an underground car park, devoutly believing that "a new Messiah for a New Age" will appear there before dawn - and their wait does not go unrewarded.
Jane Lapotaire and Joss Ackland star in this adaptation of Rudolph Besier's play. Elizabeth Barrett is kept a virtual prisoner by her father. Then the poet Robert Browning bursts into her life.
An American gambler on a trans-Atlantic liner goes into the pool that bets on how far ship sails each day. Expecting bad weather, he bets a low distance, but then the weather fines up. He must come up with a plan to slow the ship down.
