If you've been brave enough to watch it, you'll know that the Exorcist is one of the most terrifying movies ever made.
Inspired by true events, the 1973 Academy Award-winning film about a young girl who becomes possessed by a demon shocked audiences across the globe and gained a huge cult following.
It has now been adapted for stage by Bill Kenwright and will embark on a nationwide UK and Ireland tour this autumn.
It's coming to Dublin this Halloween.
And with none other than X-Men legend Ian McKellen voicing the Demon, we're expecting great - and gruesome - things.
The Exorcist comes to Dublin’s Gaiety Theatre for Halloween week from 29th October - 2 November 2019.
Tickets start from €21 and go on sale this Friday 29th March 2019 from gaietytheatre.ie
