how does Shelley most clearly create suspense in the story?

Shelley creates suspense in the story through the use of foreshadowing, creating a sense of foreboding, and pacing. There are several instances in the story where Shelley hints at the presence of a monster, such as the disappearance of Victor's brother, William, and the letters Victor receives from Walton describing strange encounters in the Arctic. These instances suggest that something sinister is happening and that Victor is in danger, creating a sense of dread in the reader. Additionally, Shelley uses pacing to build tension, with the suspense increasing as Victor's creation gets closer to completion and the monster's appearance becomes more imminent.