Lord Henry's sociopathy
After watching this picture with the wife, we have been talking about Lord Henry...specifically how he instigated so much of the story's happenings, and yet shows absolutely no remorse or concern that he's done these things. The opening did state he was a person that got his pleasure not from doing things himself, but convincing others to do them and observing the outcome.
BTW, I've read the novel a couple times so I'm well familiar with the story and its history.
A good example is how he put the idea into Dorian's head to test Sibyl Vane. After planting this seed and seeing the outcome, he visits Dorian and tells him (in a very casual, unconcerned manner) to not let it worry him, that she was already unbalanced, and that he wished someone would've killed themself over him.
Then he says Dorian should come dine with him and join him at the opera. Everyone will be there, he says. As he leaves he's humming a refrain from the opera cheerfully.
And all this after he instigated an incident that resulted in a young woman's suicide. I suppose I could understand if he had simply caused an end to the relationship, but in this case someone died and it bothered him not one bit.