'The Talisman'

In 1984, Stephen King published a novel entitled 'The Talisman', co-written with American writer Peter Straub.

Jack Sawyer is a twelve-year-old boy, son of an actress with cancer. During a trip to a resort town in New Hampshire, he learns that he is the only person in the world who can save the queen of a parallel world. Some people from our world have equivalents, called twinners, in the parallel world.  The twinner for the boy's mother is the Queen of the Territories. To save both women, Jack has to embark on a long journey to a mysterious hotel brimming with evil, that houses a marvellous talisman which can cure any ailment. Jack embarks on a mysterious journey, jumping between the two worlds where many adventures, as well as dangers posed by his cunning uncle Morgan, are waiting for him. 

The main character's name is a reference to Mark Twain's book—The Adventures of Tom Sawyer; there are also many quotes from this book in King's novel.