Helsinki, June 1953, at the heart of the Cold War. Hella, now a reluctant private investigator, has been asked by her former boss at the Helsinki murder squad to do a background check on a member of the Finnish secret services. Not the type of job Hella was hoping for, but she accepts it on the condition that she is given access to the files concerning the roadside death of her father in 1942.Colonel Mauzer was killed by a truck in a hit and run incident. An accident, file closed, they say. But not for Hella, whose unwelcome investigation leads to some who would prefer to see her stopped dead in her tracks.