pitchman
Screenwriter
That'd be my guess, too, Neil. But, I would not be surprised to see the Alan Hahn character (Greg Germann) resurface at some point. He seemed visibly affected by the misfortune his interaction with Ariel brought about, particularly, after his wife said she wanted to be involved in the support of his (supposed) illegitimate daughter. I'm not saying he'll try to correct it, since that would not be the Medium style. However, I can see a scenario where they bring him back and he interacts with Allison (and/or Ariel) regarding something else and in the process makes some sort of amends.