The Big Bang is a 2011 American action thriller film written by Erik Jendresen and directed by Tony Krantz, starring Antonio Banderas and Sienna Guillory.

Ned Cruz (Antonio Banderas) is a Los Angeles private investigator trying to find Lexie Persimmon (Sienna Guillory).

The reclusive and eccentric billionaire Simon Kestral (Sam Elliott) is obsessed with finding "the god particle" by recreating the exact situation in which the universe may have formed.

Detectives Poley (William Fichtner), Frizer (Thomas Kretschmann), and Skeres (Delroy Lindo) are interrogating Ned Cruz (Antonio Banderas), a Los Angeles private investigator, who tells them that five years earlier, Russian mobster Skinny Faddeev gave $30 million in blood diamonds as an advance to Anton (Robert Maillet), a boxer, to intentionally lose a fight against his nephew.

Ned then meets a waitress named Fay Neman (Autumn Reeser)—a particle physics buff—who helps him and sleeps with him.

Simon is interested only in finding the "God particle" and feels indifferent when Julie tries to warm up to Ned.

When the duo head toward the basement, Ned is astonished to find Niels dressed like a woman, and in a blonde wig.

Ned looks at a glass tank containing a gecko and realizes something; he tells the villains that he knows where Niels stored the diamonds.

[4] On Metacritic, the film has a weighted average score of 25/100 based on 9 critics, indicating "generally unfavourable reviews".