John Quinn

Dr John Quinn (or Matthew Quinn) served as deputy to Charles Lawrence at the Wenley Moor nuclear research facility.

Early life
Dr Quinn, whose first name was either John (TV: Doctor Who and the Silurians) or Matthew, was the son of famous scientist Sir Charles Quinn. His wife died in a car accident. (PROSE: Doctor Who and the Cave-Monsters)

The Silurians
While potholing under Wenley Moor, Dr Quinn made first contact with the Silurians, and wanted to keep the scientific glory of his discovery for himself. Driven by his ambition to be remembered like Charles Darwin, he told only his assistant, Phyllis Dawson, of his find. He planned to get as much scientific knowledge as possible from the Silurians, and then kill them all. (PROSE: Doctor Who and the Cave-Monsters)

When UNIT arrived at the facility and began searching the caves, Dawson began to worry, but Quinn reassured her that nothing serious was going to happen. Quinn decided to contact the Silurians again. When he arrived, the leader told Quinn to find the Silurian that Major Baker wounded. The leader gave Quinn the Silurian's summoning device.

Quinn searched for the Silurian and began to obstruct the Third Doctor's investigations. Searching the countryside, he managed to find the Silurian before UNIT did. He brought it to his cottage and planned to hold it captive, and force the Silurian to give him the scientific knowledge they promised him because he had become frustrated with the Silurians holding back giving him their knowledge. Despite Miss Dawson's warnings, the Silurian Dr Quinn was holding captive escaped and killed him. (TV: Doctor Who and the Silurians)