Watch Goodnight Sweetheart Season HD Full Free on solarmovie.do. 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.