I just listened to the story again, and there are some more disturbing details:
1) When British investigators visited Mr. Curry's house, it was a burnt-out ruin. The reason wasn't stated, but... You're getting there; I immediately thought: 'Did his wife and son burn the house down to make it appear Mr. Curry had died in the blaze?' Did they benefit from his death?
2) As soon as they returned from England, what do you reckon the poverty stricken pair, who had just flown to England and back, and obviously paid somebody to 'lose' Mr. Curry, did? Report him missing? No. They went on holiday, an almost celebratory act, akin to dancing on a grave.
I really, really hate these people. Let me tell you how I feel about them, based on something my brother read to me off of facebook (which I'm not on, by the way: I'd spend far too much time unfriending people.) If I encountered Mr. Curry's wife and son in the street, whilst I was carrying a glass jug of water and they were on fire - I'd smash the jug and glass them with it. πΏπ