They Came to Rob Las Vegas

The wealthy Skorsky runs an armoredcar service with hightech surveillance and weaponry. He also has ties to a criminal organization and is being investigated by Douglas, a government lawenforcement agent.Tony Ferris takes a job as a dealer in a Las Vegas casino to become acquainted with Ann Bennett, a compulsive gambler who works for Skorsky, a married man who has designs on her. At first she is offended at realizing that Tony seduced her simply to learn more about Skorskys organization, but eventually she assists his plan to pull off a heist of an armored car in a remote part of the desert between Las Vegas and Los Angeles. ........

Source: Wikipedia