One thing that bothered me about the Albie/Lucia ending: why did she feel the need to sneak out before he woke up, proving that it was a scam?
He has her bank info, and international transfers don't necessarily post immediately. He may have at that point been able to cancel the transfer if it had posted but was still pending.
She had no need to run out. Let him wake up with her in his arms, maybe give him another round in the morning, say thanks I'll visit you in LA, and leave him thinking that it's all real. Ghost him once he's out of the country.
Also: I'd imagine that Portia will also be a suspect in Tanya's death. She was seen leaving with her but wasn't on the boat back. And she's going to go on an international flight with no luggage, with all of her possessions abandoned in a hotel room. Jack disappeared, so no one to corroborate her story. (or will she blackmail Greg for a few million?)