The Doctor and Jamie are rescued and taken aboard the Wheel space station. Jamie sabotages the Wheel's laser to save the TARDIS from destruction but places everyone in danger.

The Doctor receives a mysterious package from his old companion, Jo Grant. Sarah joins Mike Yates to investigate sinister events at a Buddhist meditation centre.

Aleksandar Jovanovic was born in Rottweil, Germany.

He is an actor and director, known for Collide (2016), Close to the Enemy (2016) and Schutzengel (2012). 

Murray McArthur is a British stage, television and film actor.

He has appeared in many stage-plays in British regional theatres and on London's West End (including the Royal National Theatre and Shakespeare's Globe). 

His most notable film role was in The Last Legion where he played a member of the 9th Legion stranded in Britain after the collapse of the Roman Empire. 

Anthony Calf  is a British actor, born in Hammersmith, London, England. 

He studied acting at the London Academy of Music and Dramatic Art (LAMDA). He has recurring roles in the television medical drama Holby City, as Michael Beauchamp, and New Tricks as Strickland. He has also worked in theatre, where his credits include productions of The Madness of King George III with the National Theatre and A Midsummer Night's Dream, The false servant Royal National Theatre and Rock’n Roll Duke of York's Theatre. He has been nominated as best actor in the Irish Times Theatre Awards 2008 for his work in Uncle Vanya Gate Theatre.

He made his television debut in the 1982 Doctor Who episode "The Visitation". 

In the same year, he landed the role of Digby Geste in a television adaptation of Beau Geste. His other television credits include the part of novelist Lawrence Durrell in My Family and Other Animals, Pip in Great Expectations and Colonel Fitzwilliam in the 1995 BBC adaptation of Pride and Prejudice. He has also appeared in episodes of Doc Martin, Foyle's War, Midsomer Murders and Agatha Christie's Poirot.

In 2010 Calf played the Foreign Secretary Anthony Eden in the BBC's revival of Upstairs, Downstairs, reprising his stage role as Eden (twenty years older as Prime Minister at the time of Suez) in Howard Brenton's Never So Good (2008).

He has three daughters and is married to the actress Caroline Harker.

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

Godfrey Quigley was an Irish stage, film and television actor.

Quigley was born in Jerusalem where his father served as an officer in the British Army. The family returned to Ireland in the 1930s and, following service in World War II, Quigley began his training as an actor at the Abbey School of Acting

In the 1950s, Quigley co-founded the Globe Theatre Company, which had its base in Dun Laoghaire. The company closed in 1960. During the same period he produced the popular radiosoap opera, The Kennedys of Castleross.

In 1949, Quigley made his first film appearance in the film Saints and Sinners. He appeared in two Stanley Kubrick films; first as the moral prison chaplain in the 1971 film A Clockwork Orange, later as Captain Grogan in the 1975 film Barry Lyndon. On British television, amongst many smaller appearances, he was a has-been gangster in Big Breadwinner Hog (1969).

Quigley's theatre roles include the Irishman in Tom Murphy's The Gigli Concert, for which he won the Harvey's Best Actor award in 1984.

Godfrey Quigley died in Dublin of Alzheimer's disease at the age of 71.

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

Peter Bathurst played Hensell in the Doctor Who serial The Power of the Daleks and Chinn in The Claws of Axos.

Also worked on Moonbase 3, War & Peace, Doctor at Large, Doctor in the House, Father Dear Father, The Troubleshooters, The Wednesday Play, For Amusement Only, Castors Away!, Mum's Boys, The Scales of Justice, Adam Adamant Lives!, River Rivals, Quick Before They Catch Us, The Murder Game, Out of the Unknown, Theatre 625, The Edgar Wallace Mystery Theatre, Change Partners, R3, The Indian Tales of Rudyard Kipling, The Hidden Truth, Dixon of Dock Green, Maupassant, The Human Jungle, Bootsie and Snudge, Saki, ITV Play of the Week, Gilbert and Sullivan: The Immortal Jesters, Frontier Drums, Two Living, One Dead, Make Mine Mink, On Trial, The Army Game, The Vise, Ten Little Indians, The DuPont Show of the Month, Three Crooked Men, Links of Justice, The Sky Larks, The Diplomatic Corpse, The White Cliffs Mystery, Night Crossing, Kenilworth, The Betrayal, Over to William, Adventure Theater, Pacific Destiny, Supersonic Saucer, Jane Eyre, John and Julie, BBC Sunday-Night Theatre, Passenger to Tokyo, Final Appointment, Colonel March of Scotland Yard, Dangerous Voyage, Calling Scotland Yard: Falstaff's Fur Coat, The Teckman Biography, Gilbert Harding Speaking of Murder, The Quatermass Experiment, Babes in Bagdad, Old Mother Riley Meets the Vampire, Gift Horse, The Bell Family, The Passing Show