[url=http://www.gunnerkrigg.com/]Gunnerkrigg Court.[/url] It's about a girl called Antimony who goes to a boarding school somewhere in Britain called Gunnerkrigg Court. Near the beginning of her time there, she discovers she has a second shadow, and from there, things just get curiouser and curiouser. There are robots and psychopomps and elements from just about every facet of mythology there is. The story is really expertly told, there are a bunch of great characters, and the art is wonderful (though it is a little basic at the beginning). It's just a really great webcomic and you should totally read it. There are over 1200 pages so far so if you like it you won't have to worry about running out for a while, and it updates three times a week like clockwork.