Peter Madsen, a self-taught Danish engineer and inventor, had a favorite pickup line he liked to use on women: “You want to see my submarine?” It wasn’t a joke. In 2008, when Madsen was 37 , he ...

Some TV show cold opens hit so hard you forget the episode hasn’t even started. The screen fades in. A few lines are said. Or maybe no one says anything at all. And suddenly you're locked in.