Johnny Vincent is a part-time private investigator.
I am not sure he is particularly licensed as such, per se, but when he gets involved in the pair of adventures we have of him, that is the role he is filling so the description works.
We discover early on that Vincent had spent several years in the Vice Squad in Sydney, Australia, rising to the impressive rank of Detective Inspector in that organization. It was then that he "realised the Great Australian Dream" in that he "won a raffle .. He won a first prize. A quarter of a million dollars".
Winning the lottery put him in an interesting position. He enjoyed his work a lot and routinely spent many off-hours pouring through old police records, a hobby really. Unfortunately, he knew that had he stayed in the Force everyone would have looked at him strangely and thought him odd, being "too rich to have any future" there, so he did the expected thing and resigned. That was five years before we meet him for the first time. During that half decade, he "spent a great deal of the money, but invested some as well. He travelled. The usual things one would expect of a major prize winner. He is still quite well off, but he gets bored. So on occasion he does some work for [a private enquiry agency]".
Vincent is described as having a "broad frame, his dark hair and darker eyes, and a once broken nose which had not quite mended and gave him an intangibly raffish air". He is a reasonably good looking man who has kept himself in quite good shape, getting himself routinely appreciated by the opposite sex. He is definitely not opposed to returning the compliment but his years in Vice has made him able to discern attraction from avarice - he tends in the latter case to smile nicely and look the other way.
Regarding his newly-found work as a private eye, Vincent works on a job-by-job basis for a firm which has been known at times to saunter onto the other side as far as legality goes, bruising a few noses as well as egos as called upon, but Vincent has made sure that he kept on the correct side of that line; he sleeps easier that way. That does not mean that he will not be ready to defend himself, as we will watch him have to more than once.
- Sipping a drink while flying first class, Vincent muses, "Even rich men enjoy what they don't have to pay for, or at least make sure they get it".