Jack Novak is an agent with the DEA.
At the beginning of the series, Jack Novak is in fairly good standing with the Drug Enforcement Agency, working undercover as a half owner of a charter fishing boat out of Cozumel, Mexico. He also owns an old but trusty sea-plane which he flies for fun and for the occasional illegal tour, thus solidifying his reputation as someone who is not above skirting or ignoring the law. With such an image, he can watch the comings and goings of numerous disreputable crime bosses while still having a good reason for the occasional mission elsewhere.
As the series progresses, Novak leaves the bureau to be full time with a beautiful rich heiress whom he adores but he maintains a good enough relationship to be called upon on occasion to help out. In turn, he is able to call in a few favors when he needs them.
Novak is in his late 30's or early 40's, in fairly good physical condition, surprising considering his love of alcohol, especially beer, and is considered very attractive by the different women he meets. He appreciates batting eyelashes and damsel-in-distress approaches but has been around the block too many times to fall for them. But since he does like them, he walks straight into whatever trap they have set up just to see what would happen.
In keeping with his cover, Novak is an accomplished pilot of numerous types of aircraft, a good boat operator who knows the Caribbean and Gulf of Mexico quite well, and is a trained scuba diver certified for impressive depths. He has an immense dislike for drug dealers, drug runners, and drug lawyers who pervert the law to get their clients off. He is intensely loyal to his friends but also can hold a grudge for a very, very long time.