Mézières and Christin have done something that almost no one had done before: after 43 years at the helm, they decided of their own accord to conclude the adventures of their heroes. The three titles in this volume (At the Edge of the Great Void, The Order of the Stones and The Time Opener) bring things full circle and establish the definitive end of the story. No need for tears, though. As the extras explain, the very nature of their universe - full of time travel and the occasional paradox - leaves the door wide open to new possibilities: anthologies of flashbacks, one-shots by other creators, and adaptations in different media, such as ... cinema!