Ransom is a 1996 American thriller starring Mel Gibson, Rene Russo, Gary Sinise, Delroy Lindo, Liev Schreiber, Donnie Wahlberg, Lili Taylor, Evan Handler andBrawley Nolte and directed by Ron Howard. Ransom was the 5th highest grossing film of 1996
in the United States.

The film starts when a multi-millionaire airline owner Tom Mullen attends a science fair that his wife Kate is judging, their son Sean is kidnapped. Sean is taken to an apartment by Maris Conner, who previously worked for the Mullens as a caterer, along
with small-time criminals Clark and Cubby Barnes and high-tech criminal Miles Roberts.

Tom calls the FBI, who set up a base of operations in his New York City penthouse.Detective Jimmy Shaker of the NYPD is arresting a perpetrator in a convenience store when Cubby nervously buys some FrankenBerry cereal. Shaker follows Cubby into the building
where the kidnappers are residing, sees Sean tied in a bedroom, and holds Cubby at gunpoint, berating him for his carelessness; it is revealed that Shaker is the mastermind behind the kidnapping and is romantically involved with Maris

Tom agrees to the FBI instructions for delivering the ransom. Receiving a phone call from Shaker, who is electronically disguising his voice, Tom follows his instructions. He meets Cubby in a New Jersey quarry. Shaker indicated that Cubby would give Tom
an address where Sean could be picked up in exchange for the money, but when Cubby appears ignorant of these instructions and simply demands the cash, Tom refuses to hand it over. 

The rest is definitely worth watching and it is strongly recommended to watch it if you have not already seen it.