When a foreign spy agency uncovers a threat on allied soil, they face a critical dilemma: how to pass the lead to local police without compromising sources or breaking the law. This episode explores the mechanics of bespoke intelligence sharing, from the "sanitization" of hot intel to the high-stakes diplomacy of liaison officers. We dissect real-world cases like the 2023 Hamas plot in Berlin and the complex "Third Party Rule" that governs data flow between the NSA, Mossad, and European law enforcement.