Board Thread:Site Questions/@comment-24189254-20150309011847/@comment-24101790-20150309012404

Finishing someone else's series seems like it would only cause problems. You can message the author and try to get them back on the project, but attempting to complete their story would be problematic. (As you don't necessarily know how they intended to end it and there's the matter of the rule against spinoffs, which your story would technically be.)