Irving was a prisoner who was head of work group 2. He told the Fourth Doctor about the portal project at the research base. He later helped Leela to destroy the Sontaran Vats. (AUDIO: The King of Sontar)
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Irving was a prisoner who was head of work group 2. He told the Fourth Doctor about the portal project at the research base. He later helped Leela to destroy the Sontaran Vats. (AUDIO: The King of Sontar)
