Perry Mason solves another one! He knows the law and how to push it as far as he can, bending it to the benefit of his innocent (naturally) client without actually breaking it. He is scrupulous in a just-shy-of-unscrupulous way. Ends justifying the means, perhaps?
Ethical questions notwithstanding, Gardner is ever entertaining. His language is crisp, plots endlessly twisting, and characters deliciously villainous or improbably naive. Forgive him his stereotypes (racial, gender, or whatever) because he was a reflection of his times.
Despite Gardner's frequently sexist portrayals of damsels in distress, one of his strongest and most interesting characters is none other than Della Street. She ran the show but was wise enough to not let on to her single-minded boss who would rattle off a litany of orders, confident she would get them all down on her steno pad, finish them on an impossibly short timeline, and never have a hair out of place. She was his defensive tackle who ran interference for him without ever showing a single ruffled feather. The soul of discretion, she would make the most secure information vault pale in comparison to her secret-keeping abilities. No wonder she remained 'Miss Street' all those years--there way no way she had a life outside that office. But we loved her for it.
These books from Earl Stanley Gardner are kind of a time capsule. You might enjoy references to 'expensive $5.00 ties,' or dropping a nickle into a pay phone. And no matter how dangerous the world seemed to them, it feels nostalgic and safe to visit now.
So if you want a (somewhat predictable) brain teaser, interesting (though somewhat stereotypical) characters, and a hero who is equal parts anti-hero, you'll enjoy these books. Take them for what they are and enjoy!