13-year-old Sam Steele Jr. forms his own private detective agency to emulate his father, Des Moines detective Sam Steele, and helps track down a jewel thief.13-year-old Sam Steele Jr. forms his own private detective agency to emulate his father, Des Moines detective Sam Steele, and helps track down a jewel thief.13-year-old Sam Steele Jr. forms his own private detective agency to emulate his father, Des Moines detective Sam Steele, and helps track down a jewel thief.