I admit I had no idea Welshmen said “Good Golly”. When I think of that phrase, I think of sock hops and 50s era teens and those cute little skirts.
I ascribe all sins and distressing behavior to the accursed Welsh. It’s explained in the RhymerFaq.
Well, they did produce Gwen from Torchwood. :dubious:
ETA: But the other nick I carry, Elenia, comes from a Welsh word, so maybe I shouldn’t talk.
Since Gee was not hired to find a blue collar crime, but a white collar crime, and the relationship is consensual, I see not point in destroying a happy family, as messed up as it may seem to people who know the truth.
He should keep it to himself, Though if it is bothering him my suggestion would be as follows. Gee should request a meeting with Rob and Jodie and simply lay it out that while their relationship is no skin off his teeth they haven’t gone nearly far enough to protect their secret. I should also suggest that he allay their fears in terms of the blackmailer, and suggest a move to a new city and a fresh start for the lot of them.
I don’t know if that is supposed to be good or bad. But the Welsh also produced the great Duffy, so I suppose they should not be considered a complete waste of protoplasm.
Skald, thank you. I think before I’ve been annoyed by some of your hypotheticals, but I totally retract that: whatever I think, they’re always interesting, and I have little higher praise to give than that 
I think I’ll break it down into several successive questions.
(1) Since the couple met again as adults, and the relationship seems loving to Gee, I am reasonably willing to believe there was no coercion etc. If one had been significantly older, or they’d been living together when they started the relationship, I’d be extremely suspicious: even if it were harmless for them, those circumstances are ones susceptable to abuse in many situations.
(2) I don’t rate the chances of genetic complications that high so long as incest is rare.
(3) Since the “crime” is victimless, I think it is not harmful. And whether or not society is squicked by it, we should live and let live. It’s the only human thing to do. Once upon a time a mixed-race or mixed-sex couple would be seen as unnacceptable, and we would wish we were amongst the people not condemning those. So it behooves us not to condemn another taboo without a good reason – whether we think it will ever become acceptible or not, because <i>we don’t know</i>. We are squicked by this, but think it tolerable. Some people think the same way today about a mixed-X relationship, and we think they’re wrong, but they think they’re right. So the only valid answer to this is one that by the same reasoning, an anti-mixed-X relationship person would give of a mixed-X relationship.
(4) Should we support the law, even when it’s unjust? I vote no, although it depends how much it puts Gee at risk personally whether he’s willing to make a stand by keeping this quiet.
(5) Is it ethical for an employer to hire a private detective to find out embarrassing/humiliating/dangerous but not-morally-wrong secrets about their employees and fire the ones who have skeletons in the closet in case they’re vulnerable to blackmail later? Um, I understand the desire for unimpeachable credentials, but where does the idea come from that firing people for victimless stuff they do in their private life is ok and not, say, evil?? 
I think everyone’s missing the idea, Gee should start blackmailing Rob and Frannie/Jodie. They paid the previous blackmailer, they’ll pay Gee. He could even help them cover whatever they’ve left undone that let the previous blackmailer and Gee discover their secret. Presumably, Gee is a sharp enough operator that he won’t be killed by someone else and won’t have to worry about the Berrys. Unless he gets an invitation from a butler named Wadsworth, that is.
Gee, this is outside the scope of your employment. I advise that you do nothing, unless your conscience otherwise prevents you from doing so.
I**** don’t see why we should do Evil Inc’s work for free!** Skald** has a whole ministry of propaganda to do that sort of thinking. I’ve enough on my plate with the rubbish genetic samples I’ve been getting lately. We haven’t received wages in a month, and I’ve had to start feeding the mutants to one another.
In addition, If anyone’s seen the octopus, I should be grateful if you inform me as soon as possible. I know it’s the third time this month, but this time it’s taken an amphibious life support helmet and we are missing a blaster…
The detective should offer to join in. Make sure he wears a rubber.
Now you’re simply splitting hares.