FX: The Series (1996)

S1E9 The Brotherhood

Title: The Brotherhood Plot: Rollie and Leo stumble upon a dangerous faction of Irish terrorists devising a scheme to pilfer the Crown Jewels of England, currently showcased at a museum in New York. In a daring move, they plan a heist to swap the authentic jewels with replicas. However, their plan takes an unexpected turn when they are double-crossed, leaving them no choice but to execute the heist for the real jewels instead!