Shaun Brett was an Alaskan millionaire who became obsessed with his deceased father.
Shaun Brett was born in 1952 to a wealthy oilman. In 1964, when Shaun was twelve, his father hired Tulung's father, an archaeologist, to work on a dig near Koyukuk, but he died when it caved in, leaving Brett the only survivor. Shaun, who idolised his father, was devastated when he later died out of guilt over what happened, and blamed his death on Tulung's father. Tulung, in turn, blamed the elder Brett for his father's death, and both became obsessed with the hope that someday one would prove the other wrong.
In 1991, Brett hired Monica Lewis to aid in building a monument to his deceased father. Each room was constructed out of one of Alaska's natural resources: there was a stone room, a timber room, a fur room, an ice room, a sea room, and a bone room. Brett employed Tulung to assure the local Koyukon — who saw the gathering of materials as a desecration of the land they revered — that he honoured their traditions.
In 1994, the Fifth Doctor and Nyssa came to the nearly-completed monument and met Brett while tracking unusual energy readings. When the Permians revived, Brett fell under their influence and came to believe they were under attack by Koyukon spirits. He took the likewise-affected Tulung to the dig site, where they learned that their fathers had unearthed a Permian fossil which came to life and attacked them. Brett believed that his father sacrificed the expedition to save the world from the creatures, but Tulung discovered evidence that Brett's father fled while Tulung's father destroyed the Permian. Brett refused to believe this and sacrificed his life in a failed attempt to destroy the creatures with dynamite. The monument itself was burned to the ground by the Doctor to kill the Permians inside. (AUDIO: The Land of the Dead)