At the Dead of Night by Wayne Hopkins
Leaving the nest, and college bound, Sean Carver Jr. moves into his own apartment with the financial help of his estranged father. His mother despises the idea. Filled with worry for the well-being of her only son, she can't help but wonder whether Sean's childhood sleeping disorders will return once he's on his own. Despite her concerns, Sean has his sights set on the future. Nothing will cost him this chance at independence, not even the peculiar nightmares featuring a deranged woman he fears is real.