Blow Out is a 1981 American neo-noir mystery thriller film written and directed by Brian De Palma. It stars John Travolta as a sound technician from Philadelphia who, while recording sounds for a low-budget slasher film, unintentionally captures audio evidence of an assassination. Nancy Allen stars as Sally Bedina, a young woman involved in the crime. The supporting cast includes John Lithgow and Dennis Franz.

Plot

While in post-production on the low-budget slasher film Co-ed Frenzy, Philadelphia sound technician Jack Terry is instructed by his producer Sam to obtain a more realistic-sounding scream and better wind effects. While recording potential sound effects at a local park, he sees a car careen off the road and plunge into a creek. The male driver is killed, but Jack manages to rescue a young woman named Sally Bedina and accompanies her to a hospital. There, a detective interviews Jack about the accident, and Jack asks Sally out for a drink. He learns that Governor George McRyan, a presidential hopeful, was driving the car and that Sally was his escort. An associate of McRyan, Lawrence Henry, persuades Jack to conceal her involvement by smuggling her out of the hospital.