"Insomnia" is a novel by Stephen King that explores the life of Ralph Roberts, who begins to suffer from chronic insomnia. As he struggles to cope with his sleeplessness, he starts experiencing strange visions and becomes aware of the supernatural forces at play in his town. His insomnia acts as a gateway to a deeper understanding of life, death, and existential threats that affect humanity. With each night without sleep, Ralph gains insight that blurs the line between reality and a disturbing alternate world.
The story delves into Ralph's interactions with other characters, including his friends and loved ones, as he confronts the challenges brought on by his condition. These relationships add emotional depth to the narrative, showcasing the impact of Ralph's insomnia not just on him but on those around him. Ralph also grapples with themes of aging, loss, and the burden of knowledge, as he feels the weight of understanding the darker truths of existence.