Lapidus made his writing debut in August 2006 with Easy Money, an account of the Stockholm underworld, and the first of the Stockholm Noir trilogy. Two years later the second installment Never Fuck Up was published and the third part was published in 2011 with the title Life Deluxe. The Stockholm Noir trilogy has also been adapted into a Swedish trilogy of films released in 2010, 2012, and 2013.
In the upcoming TV series, lawyer Emily Jansson and ex-convict Najdan Maksumic are thrown together to investigate a mysterious disappearance that links their worlds. Emily is a rising star at her firm and Najdan wants to free himself of debt. She has been chosen for the job because she is skilled and effective, whilst Najdan has been chosen: The why and how of this choice is part of the intrigue in the storyline.
More recently, Lapidus kickstarted a new series unrelated to his Stockholm Noir trilogy from which Stockholm Delete has been translated into English. His writing has been compared to James Ellroy and Dennis Lehane.
