NEW YORK — The life of Seth Grahame-Smith could be described as a mashup. He wrote the best-seller Abraham Lincoln: Vampire Hunter. His follow-up, The Last American Vampire, was recently released. Lately, Grahame-Smith has been occupied with plenty of other projects — pursuing his directorial debut with the film Something Wicked This Way Comes, writing and co-producing the sequel to Beetlejuice, and writing two Lego movies and a CBS pilot.