Today if you took a stroll down 4th Avenue on the west side of town, drove past the part where the road narrows just a bit, and then stopped at Edelweiss Court, you might never know that once this quiet corner of New Glarus was the backdrop for a full-scale atomic spy chase at the start of the Cold War — complete with government agents hiding in hedgerows, a physicist accused of betraying a nation, and a Swiss farmwife who sent the FBI packing with a shotgun and a few choice words.