Whiz Kid and the Mystery at Riverton, The (television) Two-part television show; aired on January 6 and 13, 1974. Directed by Tom Leetch. A young inventor, Alvin Fernald, learns that the city treasurer is a crook while gathering information for an essay on city government. Only in winning the essay contest and becoming mayor for the day does Alvin get access to city files to help prove his case against the treasurer. Stars Edward Andrews, John Fiedler, Eric Shea, Clay O’Brien, Kim Richards, Lonny Chapman, Ted Gehring, Larry J. Blake. Based on books by Clifford B. Hicks.