Set in New York City, the story follows Sylvia Day, a wily young woman who tries to pull off a scam at the Taylor Department Store. When her ruse is uncovered, she pleads with the store manager to let her go, but his boss, Joe Smith, insists on enforcing policy, and she is handed over to the police, convicted, and sentenced to a year behind bars. Sylvia becomes consumed by thoughts of revenge against Joe, fueling a cold, calculating resolve as she plots from her cell.
Inside the prison walls, she befriends the chatty Jeanie Vance, a fellow inmate who suggests teaming up for further crimes once they’ve served their time. Sylvia learns that Jeanie has a surprising connection to Joe, which hardens her determination. After she learns this, she schemes to win her freedom early. A planned blaze is set, and as smoke fills the room, Sylvia passes out while desperately trying to get the flames under control. For her so‑called “heroism,” she is granted parole and walks back into the city with a sharpened appetite for retribution.
Tony Gratton, her partner in crime from the failed scheme, presses her to marry him and head to Chicago to continue their life of crime, but Sylvia refuses, fully aware that Tony is already married. Her focus remains on Joe and the chance to settle the score once and for all. She begins to stalk him, learning everything she can about the man she blames for her downfall. Then, at a nightclub where Joe is celebrating his promotion to general manager, Sylvia—posing as an old acquaintance—gets him drunk. The next morning, Joe discovers a surprising scene: she is in his apartment, and she bluntly informs him that they have gotten married. Joe laughs but reveals that he already has a wife. She counters by saying she knows who that wife is (Jeanie), and she lays out her motive: revenge and control.
Enter Tony again, this time masquerading as the man who married them; he produces the marriage license and uses it to threaten Joe with bigamy. Faced with legal trouble, Joe reluctantly agrees to provide support for Sylvia for one year—the length of her parole—buying time to test the waters of this dangerous new alliance. Tony continues to press his luck, slipping a counterfeit $20 bill into Sylvia’s purse to push her deeper into temptation. She embarks on a shopping spree, paying for a portion of her purchases with the fake note. Joe is unhappy with the extravagance and urges her to return the items; she intends to, but hesitates and eventually decides to keep them. The bill is traced back to her, and a policeman closes in, but Joe intervenes, claiming the money came from his own pocket. As a store manager who regularly handles counterfeit situations, his ruse buys time and, through a carefully crafted act of kindness, he wins her over. The purchases are eventually sent back.
As tensions simmer, Joe calls from the office to request a favor. Mr. Taylor, the eccentric owner, is curious about Joe’s marriage and decides to join them for dinner at their apartment. While Sylvia cooks, Jeanie reappears, freshly released and intent on blackmail—seeking to locate her long‑lost husband before they head to Florida. Sylvia negotiates with Jeanie, convincing her to abandon the blackmail scheme in New York and to join the trip to Florida instead. Before departing, Sylvia leaves a letter for Joe laying out everything, ending with the explicit confession, I love you. On the train, Jeanie reveals that she actually divorced Joe without his knowledge. Sylvia hurries back to the apartment, only to find that Joe has already read the letter and is waiting with open arms.
> I love you
