**The source is a poem that depicts a terrifying scenario of a character being haunted by unseen entities. The poem's speaker feels a sense of dread, as if they are being followed and watched, and they struggle to convince themselves that everything is fine. The poem uses vivid imagery and repetition to emphasize the feeling of overwhelming fear and the constant presence of the unseen threat. The poem ends with the haunting repetition of the line, "You'll never be alone again," suggesting that the character is trapped in a cycle of fear and isolation.