Unable to escape, the Morestran probe is being pulled back to the surface of Zeta Minor. On board the ship, the Doctor and Sarah are hemmed in by anti-men!

Clara must fight her own battle against a multidimensional menace when the Doctor becomes trapped, but even walls cannot offer her protection from an enemy that moves in realms beyond human perception.

Separated from the Doctor, Clara discovers a new menace from another dimension. But how do you hide when even the walls are no protection? With people to save and the Doctor trapped, Clara comes up against an enemy that exists beyond human perception.

Shawna Trpcic is a Hollywood costume designer. She got her start in the industry with the 1990 film Megaville, and went on to work as a wardrobe assistant on the films Toys and Red Shoe Diaries. She later served as the main costumer designer on Joss Whedon's Firefly, Angel, Doctor Horrible's Sing-Along Blog and Dollhouse, as well as Marti Noxon's Point Pleasant. 

She was also the main costume designer for Torchwood: Miracle Day.

As well as appearing in Doctor Who, Edward Brayshaw's television roles included the part of Rochefort in the 1966 serial The Three Musketeers and 1967's The Further Adventures of the Three Musketeers. He also had a role in the cult ITV drama The Avengers and ITC series including The Saint and The Champions. However, Brayshaw is probably best known for playing Harold Meaker in the BBC1 children's comedy series Rentaghost, which ran from 1976 to 1984.

John Collin played Brock in the 1980 story The Leisure Hive.

Also worked on All Creatures Great and Small, The Chinese Detective, Strangers, The Guns and the Fury, Born and Bred, The Errand, Tess, Coronation Street, Wuthering Heights, Z Cars, Holocaust, Crown Court, Our Mutual Friend, The Sweeney, All Creatures Great and Small, Dial M for Murder, BBC Play of the Month, A Raging Calm, The Protectors, Play for Today, Man at the Top, Innocent Bystanders, Man at the Top, The Adventurer, Justice, Thirty-Minute Theatre, The Guardians, Public Eye, Been Down So Long It Looks Like Up to Me, The Main Chance, ITV Playhouse, Confession, W. Somerset Maugham, The Last Escape, Wicked Women, Manhunt, Randall and Hopkirk (Deceased), Paul Temple, The Expert, Before Winter Comes, Softly Softly, The Saint, The War of Darkie Pilbeam, Star!, The First Lady, Virgin of the Secret Service, Half Hour Story, Man in a Suitcase, Haunted, Boy Meets Girl, Long After Summer, Escape, The Baron, The Wednesday Play, ITV Sunday Night Drama, The Witches, Dixon of Dock Green, No Hiding Place, Five More, Theatre 625, ITV Play of the Week, The Good Soldier Schweik, Mysteries and Miracles, Redcap, The Edgar Wallace Mystery Theatre, Six of the Best, Undermind, Dead Man's Chest, Emergency-Ward 10, The Villains, The Big Pull, The Pirates of Blood River, The Valiant, Armchair Theatre, Deadline Midnight, BBC Sunday-Night Play

Sheila Gill played the Matron in the Doctor Who story Mawdryn Undead.

Also worked on Crime Traveller, The Bill, U.F.O., Personal Services, Dramarama, Paradise Postponed, Shine on Harvey Moon, Never the Twain, Dead Ernest, Ladykillers, Supernatural, Jubilee, Clayhanger, Village Hall, Bachelor Father, The Mating Machine, Crossroads, Malatesta, Redcap

John Hollis  was an English actor. He played the role of Lobot in Star Wars Episode V: The Empire Strikes Back and the German porter at the chateau in The Dirty Dozen. He appeared in the classic 1978 film Superman as one of the Elders of Krypton, and reprised his role in the 1980 theatrical version of Superman II.

He also played the role of Ernst Stavro Blofeld in the cold open of the 1981 James Bond film For Your Eyes Only, going uncredited due to the controversy over the film rights and characters of Thunderball. In this sequence, his character was famously lifted from a wheelchair and dropped to his death down a chimney stack by Bond (Roger Moore) after he had attempted to kill Bond by using a remote control link to Bond's MI6 helicopter.

Hollis also took the role of Sondergaard in the Jon Pertwee era of Doctor Who in the story The Mutants, and appeared in The Avengers and The Tomorrow People.

John Hollis was a fine and versatile character actor for BBC Radio, his roles notably including Magwitch in Great Expectations, Leonard Bast in Howards End, Conan Doyle's Inspector Lestrade andShakespeare's Bardolph. He also took part in some commercial recordings, in parts as various as the March Hare in Alice's Adventures in Wonderland and the Murderer of the Duke of Clarence inRichard III.

He broadcast his own recollections of a cockney childhood, for the BBC in the 1970s.

_{Biography from the Wikipedia article, licensed under CC-BY-SA}