True believer by Nicholas Sparks

These excerpts introduce Jeremy Marsh, a skeptical scientific journalist, as he travels to the small town of Boone Creek, North Carolina, to investigate mysterious "ghost lights" at Cedar Creek Cemetery for a column, hoping the story will lead to a regular television gig. He quickly becomes involved with Lexie, the local librarian, who is fiercely protective of her town and her grandmother, Doris, a respected town psychic. While pursuing the rational explanation for the lights, which involves an old diary, industrial reflection, and foggy conditions, Jeremy struggles with the romantic feelings developing between him and Lexie. The sources culminate with Jeremy solving the mystery and learning that Lexie is pregnant, an unexpected and seemingly miraculous event given his past medical history.