Watch The Happytime Murders (2018) HD Full Movie Free on SolarMovie. Watch The Happytime Murders (2018) online free. When the puppet cast of a '90s children's TV show begin to get murdered one by one, a disgraced LAPD...When the puppet cast of a '90s children's TV show begin to get murdered one by one, a disgraced LAPD detective-turned-private eye puppet takes on the case.