One of my favourite comic book series was What If? by Marvel Comics. In every issue they would explore controversial scenarios playing them out to their fullest. What if Spider-Man had joined the Fantastic Four? What if someone else besides Spider-Man had been bitten by the radioactive spider? What if Conan the Barbarian walked the earth today? What if Gwen Stacy had lived? These and other curious questions would be answered in the series which took place in an alternate Marvel universe, an alternate timeline.