The series concluded with a two-part finale in 1998.Īlexandra 'Alex' Mack is an ordinary teenage girl, living with her parents, George and Barbara, and prodigious older sister, Annie, in the industrial town of Paradise Valley, Arizona. The Secret World of Alex Mack was accompanied by a tie-in series of 34 paperback books, as well as a variety of merchandise. Lynch of Lynch Entertainment, produced by RHI Entertainment, Hallmark Entertainment and Nickelodeon Productions, and was co-created by Thomas W. The series was produced by John and Thomas W. The Secret World of Alex Mack is an American television series that ran from Octoto January 15, 1998, on Nickelodeon (part of the SNICK line-up).