Scipio I thought Jeremy was going to drug his family then set fire to the house then decided the antiques were under insured
so many different stories.
That was his first idea. That helps bolster her story because she presented a long progression to his final actions. Someone telling lies would not be able to make up such details and come up with such. What did Jeremy do when he gave up on such plan? He decided to get a semi-auto. He initially wanted a semi-auto shotgun. He siad he wanted to get into shooting birds. He was told using asemi-auto was not sporting. So what doe she do? He gets a 22 semi-auto because it was the only semi-auto he could get Nevill to buy.
He gave up the idea of shooting birds because Nevill would not get him a semi-auto and he only wanted to shoot birds with a semi-auto not one of their other shotguns? That pretty much shows he wanted the semi-auto for some other reason. He wanted a semi-auto and would not settle for anything less. It is pretty obvious now that he wanted a semi-auto to shoot his family with. At the time they didn't know what his deal was that he was so hung up on a semi-auto.
The biggest problem with a fire is he could not gurantee they would all die in which case the whole effort of waiting till Sheila and the boys were there too would be for naught. Making it look like Nevill died by flaling asleep with a cigarette would not mean the rest of the house would easily go up. If he used an accelarant it would give away it was arson not an accident. Killing them with a gun was the best way to make sure they all died.