I checked out season 5 of I love Lucy from the public libray this week and almost finished watching the set, but I have a question.

On the back of the box and the review of the set on this site it says:

five complete episodes of the radio show, "My Favorite Husband,"

But I only heard four episodes.

Is the fifth episode hidden on one of the discs, or was the "five complete episodes" on the box an error?