"A flagrant rip-off of The Adventures of the Abbotts in which only the names had been changed," acccording to radio historian Jack French. The Abbotts were Pat and Jean Abbott, popular detective characters created by Frances Crane. So, instead of Pat and Jean Abbott, you have Greg and Gail Collins, played by Mandel Cramer and (coincidentally) by an actress named Gail Collins. Richard Denning did the honors as Gail Collins' Uncle Jack.
The show aired on the Mutual Broadcasting System from August 1956 to February 1957, supposedly as a response to NBC's revival of The Adventures of the Abbotts, which had earlier enjoyed a three-year run on Mutual.
This episode brings Greg and Gail Collins to Argentina, where they encounter marijuana and "Chrome Yellow Death."