“Frankenstein” is written in an epistolary narrative from that was popular at the time in which it was written. The original publication was presented in the three volumes and this emphasised the Chinese box structure device adds a great deal to its stark drama as well as ensuring greater reader engagement.
This method enables the author to maintain a certain objective distance between the text and the reader, allowing her audience to judge and assess the moral worth of her protagonists. Flaws become evident but rather than the novelist casting aspersions on them; the characters condemn themselves in the reader’s mind by their very actions.