Having read all four of Jussi Adler-Olson’s Department Q novels, I was keen to see how the first one, Mercy, would translate to the big screen. Renamed The Keeper of Lost Causes, the film follows the book very closely and successfully manages to negotiate the tricky path of having to deal with two parallel narratives interspersed with lots of flashback.
The opening scene is moody and tense. It drops the audience right in the middle of a story, and we’re not sure why we’re there. The scene ends abruptly with gunfire and before we’ve had time to work out what it’s all about, we’re transported to police headquarters to meet our main characters.