World of Giants (a.k.a. W-O-G) is an American black-and-white science fiction spy-fi^{[citation needed]} television series that aired in syndication from September 5, 1959, until November 28, 1959. It starred Marshall Thompson and Arthur Franz. It was aimed to be aired on CBS but a sponsor could not be found although the series aired on Australian television in 1959, and syndicated in select U.S. markets starting in 1961. ^[1]

This article relies largely or entirely on a single source. (March 2018)

American spy Mel Hunter, while on a covert mission, is shrunk to a height of six inches after an accident. This series stars Marshall Thompson as Federal Counter-Espionage Agent Mel Hunter, who uses his small size to infiltrate areas that a full-sized man could not. When not on assignment, he lives in a specially outfitted dollhouse-like miniature. The series co-stars Arthur Franz as his full-sized partner, Agent Bill Winters.

Thompson set up the premise in the show's opening voiceover:

It was up to me to be careful 3600 seconds of every hour. I couldn't expect the rest of the world to live my way. To the rest of the world, my problems are not a matter of life and death. The Bureau guards many fantastic secrets. But none quite so fantastic as Mel Hunter—-me. Following my escape from a nightmare behind the Iron Curtain six months ago, I watched along with 14 doctors and 17 scientists and saw myself shrink to the size of a six-inch ruler. The shrinking had stopped. The scientists were still hoping, still working on my case, and I was still a special agent... a kind of special special agent.

• Marshall Thompson as Mel Hunter
• Arthur Franz as Bill Winters
• John Gallaudet as Commissioner Hogg
• Marcia Henderson as Miss Brown

World of Giants was produced by Ziv Television Programs, the company responsible for such hit TV series as Highway Patrol, Sea Hunt, and Bat Masterson.

Not a success, this series only lasted through its initial production order of 13 episodes. Thompson later went on to star in the (much more) successful CBS TV series Daktari (1966-1969).

Nearly a decade later, in 1968, a similarly themed Irwin Allen science fiction TV series, entitled Land of the Giants, starring Gary Conway and Don Marshall, ran on ABC. Two years prior to that series, an animated kids TV show called Tom of T.H.U.M.B., aired as a part of The King Kong Show. In 1973 the Hanna-Barbera's animated series Inch High, Private Eye, about a similarly small detective, premiered on NBC, airing for only one season. The Doctor Who Season Two, Episode One "Planet of the Giants" had the cast shrunk after a TARDIS incident.

The complete series of World of Giants was released on Blu-ray from distribution company, ClassicFlix on November 7, 2023.^[2]