His dad played a spy on TV. Now he's unwittingly drawn into the world of international espionage after the suspicious death of a Russian woman.   Robin Harris grew up watching the sixties show Spy Squad, starring his dad, Evan Harris. So when the police deem the mysterious death of a Russian woman with rainbow-colored hair a suicide, Robin knows better.   Robin soon finds himself in the middle of an awesome plot that seems to be lifted directly from one of his father's old episodes, and, as he discovers, his father really was a spy. Now Robin and his brothers have inadvertently walked onto the scene of a real life-and-death spy drama, and as far as the free world is concerned, Robin's entrance into the family business comes not a moment too soon.