The co-authored Frankenstein

Thanks to Cinema Retro for the link:

Cinema Retro: The original 1818 edition of the novel Frankenstein was published anonymously. Five years later, its author - Mary Shelley- decided to put her name on all future editions of the work, capitalizing on the sensation it caused in the literary world. From the start, however, there were skeptics who doubted that an 18 year-old woman could have conceived such sinister goings-on. Shelley tinkered with future printings of the novel and never hid the f...