What is the suspense in the raven?

The suspense in Edgar Allan Poe's "The Raven" stems from the narrator's gradual descent into madness as he grApples with grief and loss. The repeated visits from the ominous raven, coupled with its cryptic refrain, "Nevermore," heighten the tension as the narrator's hope for solace is overshadowed by despair. Each interaction with the raven intensifies his emotional turmoil, culminating in a haunting realization of his inevitable hopelessness. This interplay between the narrator's psychological state and the raven's foreboding presence creates a pervasive sense of dread throughout the poem.