The series was shown late in 2012 by Sveriges Television, starting 4 November.
Based on author Jan Arnold's novel Upp till toppen av berget, written under the pseudonym Arne Dahl.
Shanti Roney (Paul Hjelm) & Aliette Opheim (Lottie) also worked together on Hassel (2017) as Thomas Meyer & Daniela Bergman respectively.
The series was produced by Ulf Synnerholm and Martin Cronström and was recorded after a screenplay by Cilla Börjlind and Rolf Börjlind.