Marsden was born in Victoria, Australia, but spent most of his early life living in the rural town of Devonport, Tasmania, an island off Australia’s south coast. When Marsden was 10, he moved to Sydney and went to the King’s School, Parramatta, a highly respected boarding school for boys. From King’s School, Marsden enrolled at Sydney University, where he studied law and the arts. He soon dropped out due to little academic interest and struggled with his mental health for some time. Marsden suffered from severe depression and even became suicidal, and he was admitted to an inpatient psychiatric hospital. In his 20s, Marsden worked numerous odd jobs, all of which were unsatisfying, until he began teaching in 1978. Marsden worked as an English teacher at Geelong Grammar School’s Timbertop, a prominent boarding school in Victoria, where he wrote his first young adult novel,
So Much to Tell You, in 1987. Marsden hoped to spark his students’ interest in reading with the novel, and it proved to be a huge success, both critically and commercially.
So Much to Tell You went on to win Book of the Year by the Children’s Book Council of Australia, and Marsden continued to write. He published
Letters from the Inside in 1991, which won the Fanfare Horn Book Best Book award, and he followed it up with
Take My Word for It in 1992, which was shortlisted for the Children’s Book of the Year Award for Older Readers by the Children’s Book Council of Australia. In 1993, Marsden began the Tomorrow series and published
Tomorrow, When the War Began, which proved to be his biggest success yet. The Tomorrow series is largely considered to be one of the most successful series written in all of Australia’s literary history and has won numerous awards and prizes. Marsden is the author of over 40 books and has sold millions of copies around the world; however, since 2005 he has backed off writing and returned to teaching. Marsden opened an alternative school, Candlebark, in Victoria, where he currently serves as principal. He later opened a secondary school focused solely on the arts, the Alice Miller School, also in Victoria.