By the time his trial begins, it will be all over the news again. People forget a lot, agreed, but there will always ring a bell with the majority of the population, when it re-appears in the news in 9 months or even 18 months when the real deal is starting.
Example:
In the country I live, there was december 2010 a major headline about some guy who was a pedo. A picture was discovered in the states, and was linked to my country. The night it was broadcoasted on a crime solving tv show, the perp was arrestested the same night. After a week he admitted his crimes,
and the trial begun on 17 march 2011, rested for a bit and then in april 2012 it came to it's final apotheosis . The final result of the trial was 21st of may 2012 and he will appeal to higher court. But still, people ( and the media ) didn't forget what he has done and everyone was following it. Also due to the fact, that the nature of his crimes were so gruesome and that he didn't deny it at all! ( he even stated there were more, but since you didn't ask about those, i' didn't mention it ). As for now, he faces 20 years in prison and he will be send off to his majesties grace.
Sorry if i don't know all the correct terms about when is what hearing/trial etc, and that i didn't put much info about the crimes, but i hope you get the big picture.