So Evil My Love is a 1948 British and American Gothic psychological thriller film directed by Lewis Allen and starring Ray Milland, Ann Todd and Geraldine Fitzgerald.

[5]On board a ship traveling to Liverpool, England, from the West Indies, Anglican missionary's widow Olivia Harwood (Ann Todd) is prevailed on to help nurse malarial patients on the lower decks.

Fully recovered by the time the ship docks, Mark persuades Olivia to allow him to take up residence in the lodging house she has inherited from her late husband.

The couple are in dire need of money, and Olivia is persuaded to insinuate herself into the home of her wealthy former schoolfriend Susan Courtney (Fitzgerald) and her older husband Henry (Raymond Huntley).

Mark meanwhile has discovered an old bundle of letters from Susan to Olivia, containing youthfully indiscreet descriptions of romantic dalliances and questionable moral conduct.

He has also employed a private detective (Leo G. Carroll), who has managed to trace the missing stocks and bonds back to Mark and has built up a dossier of his criminal past.

[6] Although the lead roles were played by Hollywood actors Milland, Todd and Fitzgerald, each British-born star had made their mark first in their homeland.

[8] Bosley Crowther in his review for The New York Times wrote, "Withal, there is too much confusion of a rather commonplace plot in the script prepared by Ronald Miller and Leonard Spigelgass.

"[10] Further, Jay Seaver at the eFilmCritic.com noted "... an enjoyably pulpy bit of gaslight crime";[11] and film critic Nick Beal atNoiroftheweek called it "incandescently splendid.