La noche del rat?n (US Import)

Jorge, a married man, and Sandra, his colleague and mistress, are on the road to a remote work meeting when they stop to refuel at an eerily quiet gas station. As George enters the convenience store, he barely notices the corpse on the floor before an unseen sniper sends a bullet through the shop's window. Trapped and wounded with no means of escape, he helplessly watches from his windowed cage as his lover and various passers-by are targeted. Is this man's fate mere bad luck or does he know his would-be assassin?