Universal Pictures has debuted a new trailer for the survival thriller led by Idris Elba, ‘Beast.’

Sometimes the rustle in the bushes actually is a monster.

Idris Elba stars in a pulse-pounding new thriller about a father and his two teenage daughters who find themselves hunted by a massive rogue lion intent on proving that the savannah has but one apex predator.

Elba plays Dr. Nate Daniels, a recently widowed husband who returns to South Africa, where he first met his wife, on a long-planned trip with their daughters to a game reserve managed by Martin Battles (Sharlto Copley) an old family friend and wildlife biologist. But what begins as a journey of healing jolts into a fearsome fight for survival when a lion, a survivor of blood-thirsty poachers who now sees all humans as the enemy, begins stalking them.

Directed by Baltasar Kormáku, the cast also includes Iyana Halley and Leah Sava Jeffries.

Also in trailers – Chris Evans, Ryan Gosling star in trailer for ‘The Gray Man’

The film is released on August 26th.