Nat and Abigail have decided that Canada is their best bet for a clean start with their new baby. It's the place where American and Scottish accents go relatively unnoticed, and newcomers can get lost in a crowd. The problem is that Canada doesn't have a transcontinental train, so they have to sneak back into the USA to get to the West coast. They catch a night train heading over the mountains, and are delighted to find it's one of the new...