Movie fans will be able to watch Tim Burton's psychedelic horror-comedy Beetlejuice starring Michael Keaton and Winona Ryder on 2 August within the ruins of the Dudley Castle walls, which sits within the Zoo's grounds.
While The Blair Witch Project, based on an American legend hiding in scary camera footage, will be screened the following night.
Both screenings have an age restriction of 15 and over due to the certification of the films.
Making it all the more scary is the fact Dudley Zoo has been rumoured to be haunted for centuries so will visitors stay the course in the beautiful and atmospheric surroundings.
Beetlejuice is one of the scary movies on show at the castle
The annual screenings are in partnership with Flatpack Projects, that turns Dudley Castle into an open-air cinema. There will be hot food, a licensed bar, mood-lighting, and a surprise or two thrown in to keep things exciting.
Doors open at 7pm with preview films starting at 9pm and the feature presentation on from 9.30pm once it has gone dark. Last admission to the Zoo is at 9.15pm and the event is due to end around 11pm.
Visitors are encouraged to take along chairs or a blanket to sit on.
Zoo Manager, Matt Lewis, said: "Our previous open-air cinema nights have proved really popular over the last few years and we're delighted to be able to screen extra films."
Dudley Castle is rumoured to be haunted
Prices cost £12 per film or £10 Concession. A double Bill ticket deal is £20 by calling 01384 215313.
Tickets for Beetlejuice can be booked here and for The Blair Witch Project, information can be found here.