In the first place, Jimmy had come to Oskia to claim a stake in Smith Group Corporate Law, ideally strong-arming Paul and Matilda into splitting the firm in two, with Jimmy taking everything in the States while Paul kept what was left.
The way Jimmy saw it, Paul and Matilda were going to be permanently residing in Oskia anyway. There was no way they could manage things over in another country properly, so it was basically returning the firm to the rightful owner.
Naturally, Jimmy also knew tha