Surveillance is the game here. But a break-in ends up with the night watchman dead of a heart attack. Tom Selleck although not in the opening credits, he plays a major role. During the lunch scene they are eating at Sinbad's Resturant at Pier 2 in San Francisco, which is still there even today. I had my wedding reception there in 1984, great place.
Did You Know?
Star Trek DS9 fans can see Andrew Robinson in human form. Quite different from the Cardassian tailor on DS9. See more
At about 17 minutes in a close up view of the bugging device shows a circuit board with a small microphone a coil, a capacitor and a few resistors but no active components like transistors or integrated circuits. Plus there is no battery or a place to put one. This device could not possibly transmit, let alone the 1/4 mile range stated. See more