Who tells Elvis about Stuart Langolier and what does he do with this information?

Elvis receives some crank calls so when the phone rings, he answers it sarcastically. He recognized the voice from previous prank calls. The caller, a woman who Cole believes in Mrs. Lester, says that James Lester is a liar. She also tells Cole to find out about Stuart Langolier in Santa Barbara. Elvis has a colleague in Santa Barbara named Toni Abatemarco try to find out more about the connection between James Lester and Stuart Langolier.