This was I believe the third of the series and the last with this woman. I like these because James Gleason does a ratatat detective, cigar-chomping, who always gets things wrong. The original idea was that a schoolmarm bests him, but her position as a teacher seems to have been forgotten after the first two.
In the first one, they actually fall in love. In the second, she establishes a new pattern as the pushy friend who seems to muddle through before the officials do. It was Gleason that makes these work. He's something of a genius.
In this one, two things are changed. The mystery goes from a pre-noir template to an Agatha Christie one: murder on a small airplane. That means you have only so many suspects and we have seen them all moving about and bumping each other, each doing something suspicious. So its mildly more engaging as a mystery than any of the others.
But something else changes here. There's much, much more physical humor. She tumbles about ungracefully as if that were a hoot. Gleason's inspector gets whacked by every door he gets close to.
Ted's Evaluation -- 2 of 3: Has some interesting elements.