Hardcastle and McCormick

As the series begins, ex-race car driver Mark McCormick accepts a job driving the Coyote X, an experimental car designed by a friend of his named Flip Johnson. Mark loses his job, however, after Flip is killed in a car accident and ownership of the car is granted to industrialist Martin Cody. Eventually, Mark is brought before Hardcastle, who is presiding over his last case, Mark is given a choice: help the judge round-up two hundred men who walked out of the judge's courtroom on technicalities or go back to prison.

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Hardcastle is quite upset when he is criticized in “Without Sin,” the autobiography of retired mobster Joseph Cadillac. Figuring that the mob, also the subject of Cadillac's criticism, will be angered as well, Hardcastle has Mark follow the author. Later, Hardcastle is surprised when Cadillac comes to him for help.

Teddy, McCormick's cellmate in prison, is out on parole. He has been staying with Mark in the guesthouse, without Hardcastle's knowledge or permission. Now, his parole officer, Quinlan, informs him that due to a minor infraction, he has the power to send him back to prison, unless he pays him a thousand dollars a week.

A convict who has been having an affair with the warden's wife, escapes with her help. He then calls Hardcastle, which agitates him. He and McCormick go out to find him. Eventually, it's revealed that before Hardcastle chose McCormick, he gave this guy a try—and he proved Hardcastle wrong.

Hardcastle wants to investigate a woman named Tina Grey. When Hardcastle goes to the police for info, a Captain Filapiano, who doesn't like Hardcastle, asks him to leave. Hardcastle then tells McCormick to get close to her. As they get closer, a gangster named Joe Beiber, whom she has been seeing, and who is insanely jealous abducts them.