One Step Behind is a 1997 crime novel by Swedish author Henning Mankell, the 7th in his acclaimed Inspector Wallander series.

Excellent.

An intriguing plot with Wallander facing serious personal health problems.

Two young women and one young man, inexplicably dressed as the nobility of Sweden did during the reign of Gustavus III, are found dead, each slain with a single bullet, their bodies half consumed by animals in the wilderness.

Wallander is horrified when he makes a connection between the crime and his close friend and colleague Svedberg, and after the latter is found savagely murdered …

related – Director Ingmar Bergman was the author’s father-in-law.