A vulnerable, but bright young woman, Marie Swift, is plagued by grief, nightmares and ghosts. She'd rather be looking for love. When she journeys to England in 1936 on a grant to finish her college studies, Marie finds a delightful great uncle living in his London mansion. It just happens to be built atop the ruins of ancient Dunmore Castle near the Kensington High Street Train Station. Marie gets to know London and meets many new friends. She also stumbles into serious trouble and finds more ghosts who go bang in the night.