While at a restaurant, Dick, Pat, and Junior find themselves surrounded by the henchmen of a gang. Though they keep their distance, and exit the restaurant safely, it doesn’t take long for a confrontation. The black pearl is still safe, and it’s off to the crime lab to check on clues.
It’s a prime lesson for Dick to show his young partners the fibers in the hat and coat that was taken from an escaping thug, and the details their microscopic clues can offer. A secret encoded phone message comes in, and it’s just the thing to set Dick Tracey into motion.