Oskar Jensen is an author and academic. He researches songs at Newcastle University and his latest nonfiction title, Vagabonds: Life on the Streets of Nineteenth-Century London, was shortlisted for the Wolfson History Prize. His debut novel and the first to feature Danish sleuth Torben Helle, Helle and Death, was published by Viper in 2024. The sequel Helle's Hound was published in 2025.