The Law and the Lady is a 1951 American comedy film directed by Edwin H. Knopf and starring Greer Garson, Michael Wilding (as twin brothers) and Fernando Lamas.

Very loosely based on the 1925 play The Last of Mrs. Cheyney by Frederick Lonsdale,[2] the action is transferred to the turn of the century, the names are all changed, and the first half of the film shows the history of the two thieves.

In the play and in the two other films, Charles leaves and Mrs. Cheyney accepts Lord Dilling, who kisses her and declares: “That's the Last of Mrs. Cheyney!” Jane Hoskins (Garson) has worked most of her life as a lady's maid, and is currently employed by Lord Minden (Wilding) and his haughty wife Lady Sybil Minden.

Jane is angry at being wrongly accused of theft by her employer and decides to quit her job and make her way into high society.

At the end of the night, one hundred pounds wealthier, Jane makes a business arrangement with Nigel that the two of them should work together as confidence tricksters.

Jane and Nigel travel to Monte Carlo, San Remo and Shanghai, where they cheat at gambling and are repeatedly asked by the authorities to leave the country.

On the first night of her stay, Jane locates Julia's safe and the necklace, but is touched by the lady's kindness towards her and has second thoughts about their plan, so she does not go through with it.