A fun story woven around an improbable plot. There's the master criminal who is an elusive phantom, his double crossing minions who aren't quite cleaver enough, the government agent who is always one step behind him, the framed hero who just can't quite clear himself, and the inexperienced heroine who blunders her way to a solution. 
 Of course she, the heroine, acts completely irresponsibly. Only in fiction would something like that work out. It was interesting how, I assume because of when it was written, that the proprieties were observed. 
 So if you're up for a fun nonsense mystery, by all means read it.