Mike Lyndon was the husband of Beth Halloran, a member of a Cell 114 invasion force posing as human and unaware of her true identity.

The couple lived at 114 Brodsky Gardens in Cardiff. Armed with a cricket bat (which he kept underneath their bed), he tangled with some burglars and ended up in hospital. Beth herself reverted to alien form and killed him. Informed of the news by Torchwood Three, she decided to leave Mike to protect him. Whist she was hugging him and saying goodbye, she accidentally killed him with the blade her hand changed into. (TV: Sleeper)

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