Lapidus was born into a middle class family in the Stockholm suburb Gröndal, with a mother who was a social worker.

While this project does take place in the same universe as the novels, it is not the third part of the Stockholm Noir trilogy but rather a side story.

In 2014 Lapidus published the novel VIP-rummet which is the start of a new series unrelated to his Stockholm Noir trilogy.

And in 2021 into a Netflix series, Snabba Cash which takes place ten years after the film trilogy.

Lex Lapidus is a series of TV-programs in Swedish television about the judicial system in different countries.