Desmond heard about what happened to the twins as well as Alec. He knew that other than getting the twins to assault Ash, Williams had gone ahead to send the videos to a few people which could explain how Alec ended up dead. He never knew that Williams was so foolish. Didn't he know that by sending the video to more people, he was only implicating himself?
The wise thing he could have done was to warn the twins not to share the videos with others or overuse them in blackmailing Ash. How could he forget that Ash was erratic and evil and her father was no less?
Now that both Alec and the twins were dead, he was overcome with feelings of dread. He believed that Williams was still alive and tried to mind-link him since there had been no news of his death, but he was not able to. He decided
