Lou Bookman (Ed Wynn, who we would see again in Ninety Years Without Slumbering in Season 5) is a pitchman, and when he learns that he is about to die, he isn’t quite ready. He wanted to give one big pitch, a pitch for the angels, and he makes a deal with Death that he won’t go until he has done so. He thinks he made a great deal.
Unfortunately Death has a trick up his sleeve. Insted of Mr. Bookman, he is going to take little Maggie, and that won’t do at all. So Mr. Bookman has decided to delay Death past his appointed time, and as it turns out he does so with the pitch of a lifetime – one for the angels it seems. When he is done, Maggie will recover, and it’s Mr. Bookman’s time to go. Nice tale.