"4"^^ . "--12-23"^^ . "102"^^ . "The Power of Kroll"@en . . . . . "Robert Holmes was tasked with writing a second serial for the season (having already written The Ribos Operation, the season opener) after Ted Lewis' Shield of Zarak was not completed. Holmes was asked to create a monster of epic proportions. This worried many crew members, due to cost restrictions. The Power of Kroll was to be the fourth story of the season until it was swapped with The Androids of Tara, originally fifth. The K9 prop would not work on swampy ground and so does not appear in this story. However, John Leeson appears in the role of Dugeen. He took the part after the actor originally cast became unavailable."@en . "Doctor Who and the Power of Kroll"@en . . "4"^^ . "The Power of Kroll (TV story)"@en . . "The Androids of Tara"@en . . . "The Armageddon Factor"@en . . . . . . . . . . . . . "5"^^ . . . "Fourth Doctor"@en . . . . "Robert Holmes was tasked with writing a second serial for the season (having already written The Ribos Operation, the season opener) after Ted Lewis' Shield of Zarak was not completed. Holmes was asked to create a monster of epic proportions. This worried many crew members, due to cost restrictions. The Power of Kroll was to be the fourth story of the season until it was swapped with The Androids of Tara, originally fifth."@en . . "Stretch! - Doctor Who - The Power of Kroll - BBC"@en . . . . . . . . "16"^^ .