The missing Polly appears but claims not to know the Doctor or Jamie, then Ben disappears. All clues point to Chameleon Tours, but nobody believes the Doctor's story.

Fearing Jo has died in Solos's hostile environment, the Doctor is forced to work with the scientist, Jaeger, to make the planet's atmosphere breathable for humans.

The peacekeeping Time Lord returns in what is Peter Capaldi's last series as the Doctor, an Pearl Mackie's first as his new companion.

Two worlds collide when the Doctor meets Bill Potts. An encounter with a girl with a star in her eye leads to a terrifying chase across a universe bigger and more exciting than Bill ever imagined. But who is the Doctor and what is his mission on Earth?

Two worlds collide when the Doctor meets Bill. A chance encounter with a girl with a star in her eye leads to a chase across time and space. Bill's mind is opened to a Universe that is bigger and more exciting than she could possibly have imagined.

It's a new term at Coal Hill Academy, and students are preparing for their fall Prom. But when the school comes under the attack of deadly monsters, the Shadow Kin, four students must form an unlikely alliance to defeat them.

Maisie Williams is an English actress and dancer.

She is best known for her role as Arya Stark in the HBO television series Game of Thrones, which earned her the 2012 Portal Awards for Best Supporting Actress – Television and Best Young Actor, and the BBC Radio 1 Teen Award for Best British Actor in 2013.

She has also received nominations for the Scream Award for Best Ensemble (2011), and the Young Artist Award for Best Performance in a TV Series – Supporting Young Actress (2013) for her performance.

Ricky Nixon was born in Roehampton, London, England.

He is an actor and writer, known for Doctor Foster: A Woman Scorned (2015), Dylan's Room (2012) and Prime Suspect 7: The Final Act (2006).

Siobhan Hewlett is an Irish film, television, radio and theatre actress.

She played Harriet Derbyshire in Torchwood To the Last Man. 

Her father was the comedy sitcom actor Donald Hewlett, and her mother is the actress Therese McMurray. ]

Sean Caffrey (born in Belfast, Northern Ireland, United Kingdom) is an actor.

He is best remembered for his performances on television. Credits include: Coronation Street, Z-Cars, Sutherland's Law, Oil Strike North, Survivors, Doctor Who (in the serial Horror of Fang Rock), The Professionals, Minder, Bergeracand Edge of Darkness. He also appeared in the film When Dinosaurs Ruled the Earth, which has become a cult classic.

Terry Duggan  was a comedian and actor who had a successful career in cabaret and variety and played numerous character roles on television. He was married to the actress Anna Karen, best known for playing the part of Olive in the ITV sitcom On the Buses, in which Duggan frequently appeared.

Duggan was born in Hoxton, London. From the 1960s through the 1980s, he appeared on such television series as Are You Being Served?, The Bill, Bob Martin, Only Fools and Horses,Please Sir! and Randall and Hopkirk (Deceased). His film appearances included 2001 A Space Odyssey. He also performed pantomime, frequently teaming with his wife Anna Karen.

He was also a stand-up comedian who was noted for his drunk sketches in which he portrayed an inebriated man, a concept earlier popularised by Freddie Frinton and Jimmy James. Besides practicing theatrical performance from childhood, he learned acrobatics which led to film stuntman roles. Duggan was also a member of the entertainers' charity The Grand Order of Water Rats.

Peter Moffatt was a British television director.

For Doctor Who he directed six stories starting with the 1980 Tom Baker story State of Decay and finishing with the 1985 story The Two Doctors which featured both the second and the sixth Doctors.

He was something of a specialist in multi Doctor stories having also directed the 20th anniversary story The Five Doctors which was shown as part of the BBC's 1983 Children in Need programme.

In recent years he was involved in the production of the Classic series DVD's, providing a commentary to a number of his stories. A retrospective of his work was featured as an extra on the DVD release of the 1982 story The Visitation.

His other work includes Crane (1963), All Creatures Great and Small (1978) and The Gentle Touch(1980).

Actor who appeared twice in Doctor Who, playing Solicitor Grey in the Highlanders and the Time Lord in Terror of the Autons.

He was born in Calcutta, India.

He also appeared in General Hospital and Special Branch.

Scottish Actor who appeared in the 1966 story The Highlanders.

Also appeared in Monarch of the Glen, Doctors, Soft Top Hard Shoulder, Grange Hill, Crown Court, Sink or Swim, High Road, The Dick Francis Thriller: The Racing Game, Bless Me Father, The Sweeney, The Thirty Nine Steps, Some Mothers Do 'Ave 'Em, BBC2 Play of the Week, The Professionals, Sykes, Play for Today, Spy Story, Wodehouse Playhouse, Coronation Street, Churchill's People, Sutherland's Law, Upstairs, Downstairs, Comedy Playhouse, The Borderers, Dr. Finlay's Casebook, Armchair Theatre, Detective, Orlando, Miss Mactaggart Won't Lie Down, Spaceflight IC-1: An Adventure in Space, HMS Paradise, Man of the World, Danger Man, Emergency-Ward 10, The Adventures of Robin Hood, Tunes of Glory, The Bridal Path, The Nightwatchman's Stories, David Copperfield, Steve Hunter, Trouble Merchant, The Maggie, The Princess and the Woodcutter