Clickell Rush is an inventor who wants to sell his tech (exploding cigarettes, anesthetic-gas bombs, radio trackers) to law enforcement. Law enforcement isn't interested but "Bufa" is. Communicating through a radio hidden in a toad figure, Bufa pushes Click to investigate various crimes, at a price of $10,000 a job. When Click decides he's had enough, well, Bufa forces him to reconsider.
Despite all the gadgets, these whimsical tales are much more well, realistic, than Doc Savage or Dent's early-1930s PIs such as the Blond Adder and Foster Fade. That fits — Doc Savage was toning down the superheroics — but I must admit I prefer Dent's earlier, wilder work. These stories are fun and if I didn't have expectations based on Dent's other work, I'd like them better.
Another place this suffers is that most of Dent's other series include extremely capable women. The women in these stories are just standard PI-genre eye candy.