How are foreshadowing and foreboding used in the novel Frankenstein?

One of the most dramatic examples of foreboding and foreshadowing in the novel occurs when the monster tells Victor "I will be with you on your wedding night." This happens at a point where the monster has grown bitter and hateful, cursing his ugly appearance which belies his strong intellect and depth of emotional sensitivity. He is angry at Victor for having created him, and Victor feels too much sympathy for the monster to destroy...

One of the most dramatic examples of foreboding and foreshadowing in the novel occurs when the monster tells Victor "I will be with you on your wedding night." This happens at a point where the monster has grown bitter and hateful, cursing his ugly appearance which belies his strong intellect and depth of emotional sensitivity. He is angry at Victor for having created him, and Victor feels too much sympathy for the monster to destroy him. He tries to create a female companion for the monster, but this ends in disaster.

This line has been said by numerous scholars to contain hints of underlying themes of latent homosexuality, in that the monster is a shadow image of Victor, created by him but given an ugly appearance, that contains truths he would rather not face. One idea that has been explored is that the creation of life from death suggests an end of human sexual reproduction, or, put another way, a possible world where men can exist without women. The line also suggests the monster is a constant source of worry and dread for Victor, and the idea that the monster will be with him on his wedding night hints  that Victor's marriage to Elizabeth may be haunted by Victor's conflicted sexuality.

The line "I will be with you on your wedding night," repeated ominously by the monster, also suggests that Elizabeth is a barrier to their own sexual union. Victor does not know that the monster is planning to murder Elizabeth in their marriage bed--this is perhaps the most potent example of foreshadowing in the entire story. (Interestingly, the stage play production by Danny Boyle adapted from this novel portrays this scene in brutal terms: the monster first rapes Elizabeth before he strangles her.)