In the late 19th century, Paula Alquist is studying music in Italy, but ends up abandoning her classes because she’s fallen in love with the gallant Gregory Anton. The couple marries and moves to England to live in a home inherited by Paula from her aunt, herself a famous singer, who was mysteriously murdered in the house ten years before. Though Paula is certain that she sees the house’s gaslights dim every evening and that there are strange noises coming from the attic, Gregory convinces Paula that she’s imagining things. Meanwhile, a Scotland Yard inspector, Brian Cameron, becomes sympathetic to Paula’s plight.

Wealthy, sheltered Lina McLaidlaw is swept off her feet by charming ne’er-do-well Johnnie Aysgarth. Though warned that Johnnie is little more than a fortune hunter, Lina marries him anyway. She remains loyal to her irresponsible husband as he plows his way from one disreputable business scheme to another. Gradually Lina comes to the conclusion that Johnnie intends to kill her in order to collect her inheritance. The suspicion seems confirmed when Johnnie’s business partner dies under mysterious circumstances. Joan Fontaine won a Best Actress Academy Award for her performance.

Hard times come for the Carraclough family and they are forced to sell their dog, Lassie, to the rich Duke of Rudling. Lassie, however, is unwilling to remain apart from young Carraclough son Joe and sets out on a long and dangerous journey to rejoin him.

On a train headed for England a group of travelers is delayed by an avalanche. Holed up in a hotel in a fictional European country, young Iris befriends elderly Miss Froy. When the train resumes, Iris suffers a bout of unconsciousness and wakes to find the old woman has disappeared. The other passengers ominously deny Miss Froy ever existed, so Iris begins to investigate with another traveler and, as the pair sleuth, romantic sparks fly.