The long narrative poem, "Christabel," by Samuel Taylor Coleridge, is written in iambic tetrameter couplets. This meter, especially given the way Coleridge varies the number of unstressed syllables in many lines and uses alliteration, conveys a sense of Old English verse, and such narrative poems with supernatural elements as "Beowulf" and "Dream of the Rood."
The point of view is third person, giving us the ability to see the action essentially from the outside as spectators. this is the most flexible form of authorial voice as it allows narrative flexibility by not being restricted to the time sequence of knowledge of a single character. In the other hand, the narrator primarily follows and has access to the interiority of Christabel, evoking the reader's sympathy for her.