Case Closed

A beefy man named Tommy hits on Rachel who does not return the affection. Conan is upset that he cannot spend Valentine's Day with Rachel. Serena convinces Rachel to agree to go to the party that Tommy invites them to. Serena's reasoning is that Keenan, the cute guy she met a couple days earlier, is hosting the party. Conan wants to see why exactly Rachel agreed to go to the party and hides in the trunk. While Conan is spying on the party, he sneezes and the Keenan's mother discovers that he is outside and invites Conan in. Inside there is another Rugby player named Norman, an old friend named Kari, and Keenan's crush Katie. While inside all the guests have cake and coffee. Keenan is the only person not to eat the cake. He says that he has a headache and goes outside. Norman gives him a cigarette since Keenan is out. Katie follows to give him Valentine's chocolate. All of a sudden Katie comes back saying that Keenan collapsed. His mother is beside himself. It is determined that Keenan was poisoned. Katie is the prime suspect since he died after taking a bite of her chocolate. Norman admits to trying to poison Keenan, but he doesn't succeed since there was poison in the filter, the filter which Keenan always removes to avoid the poisons in the cigarette. Conan notices that the Keenan's mother had passed out tea, and everyone except the victim had eaten some of her cake as well. Her youngest son had sipped some of Rachel's tea, and even after the mother had told him not to have any sweets, she gives him a bite of cake. The reason is that the coffee had been poisoned, but the cake was an antidote. Knowing it was the mother, Conan knocked Richard out with a sleep dart from the watch Dr. Agasa gave him. Conan then disguised his voice as Richard's who like usual, couldn't solve a simple case without Conan's help. In the mother's confession she said that she murdered Keenan for his estate money. Keenan was taken in by her because she was his only living relative. The family business had seen hard times and she had needed money to keep the house running. She claimed she did it for her family. In the end Tommy was dumped by Rachel. The chocolate's she had made were for Jimmy. Since Jimmy wasn't around she shared the chocolate's with Conan as a celebration of friendship.