Watch Goodnight Sweetheart Episode 1 HD Full Free on SolarMovie. Watch Goodnight Sweetheart tv series online free. British sitcom in which an unhappily married man discovers he can time travel back to 1940s war-torn...British sitcom in which an unhappily married man discovers he can time travel back to 1940s war-torn London where he masquerades as an MI5 agent and part-time songwriter whilst courting the local barmaid.