VIDEO : Matthew McConaughey, Idris Elba to Star in 'The Dark Tower'

Horror writer Stephen King announced this week that the big screen adaptation of his fantasy series "The Dark Tower" had finally found its leading actors. The author announced the news in a tweet quoting the first line of that first book, which references the novel's antagonist Randall Flagg and hero, Roland Deschain. 'Beasts of No Nation' star Idris Elba and Oscar-winner Matthew McConaughey soon responded to King's tweet, confirming their roles in the process. The Dark Tower is scheduled for release in January 2017.