Trials of the Century - Donaghue v Stevenson

Donaghue v Stevenson, aka the Paisley Snail case is famed across much of the world. Lawyers have made pilgrimages to the original site, and it is taught in law schools through much of the Commonwealth. Why? What makes this case important?

Well, the story starts with a snail in a bottle of ginger beer. A snail that may or may not have existed...