Golf Tango Fox:
He took someone else's property from someone else's wallet.
It's a very valid concern that you have, now that I think about it. It's questionable about the Bord Brothers, where their posession of Marlinspike (and the model ship it contained therein) may only have arisen from the profits of their crimes; but Sakharine's scroll was undoubtedly his, and morally and ethically in normal circumstances, Tintin was wrong, in my eyes, to just assume that it was his to take and use. The ancestral connection between Sir Francis and the Captain is a red herring, and isn't enough to over-ride that fact.
However, this being a fantasy adventure, I feel we have to overlook this infraction as being something that got overlooked in the creation of the adventure; not morally or ethically excusable, but ignorable on this occasion.
et tu Tintin:
If you buy a property you inherit all that goes with it at the time of the sale (good and bad).
Do you? I think there would be more to it than that - I mean, if the Bird Brothers had stashed their loot (or drugs or guns) from their crimes at Marlinspike, that wouldn't automatically have gone to the Captain, would it?
In the U.K. it would have had to go to court to see if it was treasure-trove.
Until recently this was the propety of the British Crown, and covered any valuable collection of goods found under ground, where it wasn't known who owned it. If it was determined by the court that it had been dropped or lost, it could be returned to the finder; if it was decided that it had been hidden, it was the property of the Crown (this may still be the case, but I'm not familiar with the Property Act 1996, and the points may be different (he says, as if he's "familiar" with
any property acts, rather than "just has a sketchy knowledge from reading stuff"...)).
As the treasure in this case was the result of piracy, it would also surely have been open to reclaim by the original owners; it may sound far-fetched, but there are treasures being returned to governments today that were lost from their navies, and presumably in turn someone would have turned up looking for their dubloons from the horde"
Anyway, don't assume that because you bought a house and it was full of booty that it is automatically yours...!