10 Most Underrated Stephen King Books Of All Time

For the majority of King's Constant Readers, the Dark Tower series is his magnum opus. Spanning seven core novels written over twenty two years and linking to many of his other stories, the series fits without fault into a wide range of genres, from western to fantasy, sci-fi to horror, and thriller to mystery.

The last novel in the main series was published in 2004, but it wasn't long before King longed to return to the rich and expansive world he had created.

So, in 2012, he published a tie-in novel called The Wind Through the Keyhole, which takes place between the events of the Wizard of Glass and Wolves of the Calla. It's simple in scope, taking a break from the core story as Roland and his ka-tet take shelter from a storm. There, the gunslinger tells his friends a tale from his youth in which he is sent to capture a shapeshifter called the Skin-Man.

It's a dark and mysterious novel which perfectly captures the tone of the series whilst managing to add more to the well-built world readers had come to love so much. If you read it between the fourth and fifth books, it works even better than the stand-alone adventure it's often considered to be.