Background
He was born in Mandal as a son of stipendiary magistrate Emil Bernhard Lie (1836–1891) and Nicoline Bessesen. Through his father"s brother, writer Jonas Lie he was a first cousin of Michael Strøm Lie, writers Mons Lie and Erik Lie, and a first cousin once removed of Erik"s son, the Nazi Jonas Lie.
Career
He was a second cousin of Erika Lie, Karl Nissen, painter Jonas Lie and Eyolf Soot. Lie"s family soon moved away from Mandal. They lived in Trondhjem and Kristiania before moving to Tromsø when Bernt Lie was 15 years old.
He finished his secondary education here in 1886, and moved to study law.
He graduated with the candidate.jur. degree in 1891. In October 1894 in Kristiania Bernt Lie married Hedvig Mariboe Aubert (1874–1946).
While the children were still young, though, Bernt Lie"s family lived abroad, mainly in Rome, until 1910 when they settled in Lillehammer. His debut novel was I Æventyrland, released in 1892.
Mot Overmagt (1907) is regarded as being his best book
His four boys" books are also remembered. Sorte Ørn (1893), Svend Bidevind (1897), Peter Napoleon (1900) and Guttedage (1905). His last book was En Racekamp (1915).
He wrote popular books, and was one of the more widely read authors in his time.
He died in July 1916 in Sandefjord, and was buried in Tromsø.