The Dark Tower Movie: 5 Biggest Mistakes It's Already Made

Eddie and Susannah Dean are fan-favourite Dark Tower characters, key members of Roland's Ka-tet who're no less essential to the story than the Gunslinger himself.

Except that probably isn't true in the movie because is has neglected to cast the parts or include the two heroes in the initial story it will be telling.

Eddie is a heroin-addicted New Yorker who kicks his drug habit after learning the ways of the Gunslinger, and later defeats a self-aware train by telling it jokes in one of the saga's more bizarre scenes - Breaking Bad's Aaron Paul is perfect for the role.

Susannah, who goes on to become Eddie's wife, is a complex amalgamation of light and darkness, with good and evil personalities fighting for control within her - the result of being attacked by a serial killed named Jack Mort during her childhood.

Now, we could forgive the absence of these two fascinating characters in the movie if it was a direct adaptation of The Gunslinger - the first book in the series (neither was formally introduced until book two) - but it isn't.

This is a sequel of sorts and there are no firm plans to make any more as things stand. Presumably Sony Pictures is biding its time to see how the film performs.

So the problem here is that Dark Tower could have taken the liberty of introducing Eddie and Susannah, since it isn't bound by the restrictions of a direct adaptation.

Bringing the pair in early would have helped the saga put its best foot forward on celluloid and acquainted a new generation of fans to two of its best characters.