Police Sgt Bannion is taken off investigating the apparent suicide of a corrupt cop, is he likely to uncover too much filth? Driven to further unravel the mystery Bannion continues probing until an explosion meant for him kills his wife. He resigns from the force and soon learns that behind it all is a powerful underworld syndicate led by Mike Lagana and the cold-blooded Vince Stone. The Big Heat is a classic slice of noir; a brooding, dark narrative.