Watch The Postcard Killings (2020) HD Full Movie Free on solarmovie.do. Watch The Postcard Killings (2020) online free. A New York detective investigates the death of his daughter who was murdered while on her honeymoon ...A New York detective investigates the death of his daughter who was murdered while on her honeymoon in London; he recruits the help of a Scandinavian journalist when other couples throughout Europe suffer a similar fate.