Case Closed Episode 328

👀 SPOILER-FREE SUMMARY

A standalone filler mystery that delivers exactly what long-time Conan fans expect from the series at its most comfortable. Kogoro, Ran, and Conan find themselves at a birthday celebration where festive warmth curdles into suspicion after a poisoning incident disrupts the evening. The episode leans into classic closed-room dynamics — a small group of suspects, personal grudges lurking beneath polite smiles, and Conan quietly piecing together what everyone else misses. Thematically, it explores trust and the masks people wear around those closest to them. The pacing strikes that familiar balance between genuine tension during the investigative beats and lighter character moments that keep things from becoming too heavy. Nothing groundbreaking here, but the detective work is tight and the atmosphere stays engaging throughout. A solid one-and-done mystery for fans who enjoy the episodic format.