In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story such that it seamlessly connects with the rest of the story.

Title: The Unlocked Door. Sentence 1: Ella had left her car unlocked. Sentence 2: She had left her purse in the car. Sentence 3: Her purse was missing when she returned to the car. Sentence 4: Ella realized someone had stolen her purse.
Ella always locked her car after this.