A Major Character Death: Coming to Dexter!

The fourth season of Dexter premieres this Sunday night on Showtime.

You can watch a couple clips from the opening episode now, as Dexter adjusts to family life and to the presence of a new serial killer in town: The Trinity Killer, played by John Lithgow.

According to Michael Ausiello's latest spoiler column, this murderer will claim the life of a major character during the first half of the season. Who will it be? Our money is on Quinn.

In other Dexter storyline news, Dexter and Rita will welcome a very surprising houseguest in November. No guesses here on the identity of that individual.

But now is a great time to catch up on your favorite Dexter quotes in order to prepare for the new season. We can't wait.