Also Known As:- El sonido del trueno
- I lampsi tou keravnou
- Il risveglio del tuono
- Mennydörgö robaj
- O Som do Trovão
- Un coup de tonnerre
- Peter Hyams
- Ray Bradbury
- Thomas Dean Donnelly
- Joshua Oppenheimer
- Gregory Poirier
- Armin Rohde ... John Wallenbeck (as Armin Rhode)
- Heike Makatsch ... Alicia Wallenbeck
- Jemima Rooper ... Jenny Krase
- David Oyelowo ... Payne
- Wilfried Hochholdinger ... Dr. Lucas
- Edward Burns ... Travis Ryer
- August Zirner ... Clay Derris
- Ben Kingsley ... Charles Hatton (as Sir Ben Kingsley)
- Catherine McCormack ... Sonia Rand
- Alvin Van Der Kuech ... Young Technician
- Andrew Blanchard ... George the Doorman
- William Armstrong ... Ted Eckles
- Corey Johnson ... Christian Middleton
- Nikita Lespinasse ... Newswoman on TV (as Nikita Le Spinasse)
- Scott Bellefeville ... Onlooker (as Scott Bellefeuille)
- Sai-Kit Yung ... Chinese Man I (as Stuart Ong)
- Ho Hon Chou ... Chinese Man II (as Chou Ho Hon)
- Antonin Hausknecht ... Taxi Driver (as Antonín Hausknecht)
- Anezka Novak ... Elderly Woman (as Anezka Novakova)
- John Hyams ... Delivery Man
- Martin Svetlik ... Grocery Boy
- John Comer ... Grocery Man
- Kurt Van Der Basch ... Armed Policeman
- Vladimir Kulhavy ... Man at Eckles' (as Vladimír Kulhavý)
- Jiri Klenot ... Man at Middleton's
