Highlander: The Series S05 E16 The Stone of Scone

"THERE CAN BE ONLY ONE."

According to official statements by the British government, the theft of the Stone of Scone, the legendary royal throne of Scotland, from Westminster Abbey in 1950 was simply a rowdy schoolboy prank. But was it? Or was it actually the bungled work of three rather hapless Immortals, attempting to fulfill a promise made centuries before?