The Nighthawk

S1, E4: Thomas and Helene move into a small house, where they hang their case notes on the garage wall-including about Ulrik's death, as the autopsy reveals he was murdered. Helene gets a job at the nursing home and meets an old man called "the Nighthawk." After learning that Sebastian visited the town archive shortly before his death, Thomas gains access to its security footage and makes a big discovery.