Mrs. Smith's sister, who was now filled with anger and jealousy, couldn't believe that she had been caught. She had always been envious of her sister's wealth and possessions, and now she was determined to seek revenge.

As Detective Dan was leaving the party, he received a call from Mrs. Smith. She sounded frantic and told him that her sister had disappeared from the party. Detective Dan immediately rushed back to the house, knowing that something was not right.

When he arrived, he found Mrs. Smith in tears. She explained that her sister had left a note, confessing to stealing the necklace and vowing to get revenge on her sister for turning her in. Mrs. Smith was worried for her safety and begged Detective Dan to find her sister before she could do any harm.

Detective Dan knew that he had to act fast. He searched the house once again, looking for any clues that could lead him to Mrs. Smith's sister. As he was searching, he noticed a small piece of paper on the floor. It was a torn piece of the note that Mrs. Smith's sister had left behind.

Using his detective skills, Detective Dan was able to piece together the torn note and read the full message. It revealed that Mrs. Smith's sister was planning to sabotage her sister's business and reputation. Detective Dan knew he had to stop her before it was too late.

He quickly called for backup and together they searched the city for Mrs. Smith's sister. After hours of searching, they finally found her at a local hotel. She was about to carry out her plan when Detective Dan and his team burst into the room and apprehended her.

Mrs. Smith's sister was arrested and charged with theft and attempted sabotage. Mrs. Smith was grateful to Detective Dan once again for saving her from her sister's revenge. She rewarded him with a large sum of money and thanked him for his bravery and quick thinking.

From that day on, Mrs. Smith's sister was no longer a threat and Detective Dan had once again solved another difficult case. He became even more famous and was known as the detective who not only found the missing necklace, but also stopped a vengeful sister from causing harm. And Mrs. Smith learned to always be cautious of those who were jealous of her possessions. The end.