I remember seeing this episode for the first time when it aired in 2005. At the time the gore shown in this episode was not yet seen in primetime tv, and I was stunned when I saw it. I became a fan of the show and have since watched a number of shows (Criminal Minds, that desensitized me, and I'm sure others to the violence shown here.
David Cubitt as Detective Lee Scanlon joins the cast in "A Couple of I'm so very glad he did. He's a great counterbalance to Patricia Arquette as Allison DuBois. They have good chemistry here, even as they're arguing at first.