The Penguin Pool Murder: a fun, vacation read

This book was written in 1938 and reads like a 30's movie. I could hear the "tough guy" accents and the "doll's" flirtatious "innocents". Some attitudes and words were not politically correct, something I wouldn't excuse in a current book, but take time and culture into account with this book. In my mind's eye, I could see the art deco style of the museum and other buildings mentioned.
The mystery was clever and took interesting twists and turns. The repartee between school teacher Hildegarde Withers and Detective Oscar Piper was fun, sexist on his part and not talking it on her part, and mildly reminiscent of Topper, Tom and Tuppence, and Hepburn and Tracey. 
I found this interesting enough, I am planning to buy the next book in the series to see if it improves in complexity. For a quick, light read, it was entertaining, perfect for a summer vacation read.