Netflix’s latest Swedish drama, Blood Sacrifice, revolves around a serial killer who likes luring police officers to empty homes in the middle of the night and killing them. Thomas Berg, a detective with the Stockholm police, takes on the case right before his 45th birthday and soon realizes the murders may be connected to another supposedly solved case. With the investigation hitting roadblocks, Thomas turns to his estranged father Alfred—a retired cop, alcoholic, and model-train enthusiast—...