Things quickly devolve into a hellish nightmare.

Similarly, in Max Ernst's transformation of night into day, a poet's dream has become a hellish nightmare.

Kevin Warwick called it a "hellish nightmare, as portrayed in films such as the Terminator".

A heavenly paradise becomes a hellish nightmare when a toxic spill turns harmless ants into gigantic rampaging monster insects.

For all intents and purposes , the hellish nightmare that was devastating much of the world, didn't exist for the residents in this part of Israel.

It was the memory of the two of you that got me through this hellish nightmare.

Great Cthulhu, dreaming but not dead, has for the past six days been sending out the most hellish mental nightmares from his House in R'lyeh.

For many in North Korea, life is a hellish nightmare.

Since then, the McCanns have embarked on a hellish nightmare; first to find their daughter and then to prove their innocence.

Fourteen hours after the Amazon dam had blown up, the hellish nightmare stopped as suddenly as it had begun.