The Impossible Heir takes a rather impossible scenario and makes it plausible.

That's not because the overriding scenario is in any way realistic. If I stand back dispassionately and look at this tale for what it is, its preposterous and assumes a lot of "what if's" inexplicably fall into place, "just so".

What makes this series work is decent directing, scripting and casting, with characters who take themselves seriously enough, to be believable. This series draws you in, you invest in the characters and want to see what happens next.

I will say the wealthy characters are especially... read the rest.