Melinda and Sam go back to the school to find Greer. Greer appears and tells Melinda that they have to be quiet so Dr. Byrd doesn't find them. That's why she taught the children the song, to warn her when he was near. Dr. Byrd convinced Greer that she hurt her son, and Melinda has to convince her that she didn't and that Douglas is alive. Mel asks if Greer is ready to cross over, but Greer says she can't leave the children and her "friends", who are the other ghosts Melinda saw on the playground. Mel asks Greer to take her to them, and Greer leads them to the old treatment room in the basement. Sam wants no part of this. He reeeeally wants not to go down there. Melinda tells him he has to keep trying to remember. He doesn't get it, and it does seem really out of the blue. So he asks Mel what she's talking about, and she finally breaks down and tells him he's Jim. She says all his memories and connections have to mean something, but he refuses to believe it. In fact he thinks Mel is the one who is delusional (in an old mental hospital, hee, subtle). He won't listen to any more and leaves. So much for that idea - and for helping the ghosts, huh, Mel?

Melinda tells Eli about what she told Sam, and she asks for his help. They go to the basement of her shop, where there's a boarded-up entrance to the tunnels. Melinda goes all badass and freaks Eli out a little when she's tearing the boards down, it's actually pretty funny. Eli still doesn't want to go down there, but in the end they do. And then we get some more funny with Eli hearing ghosts he can't see and doing some flashlight-fu jazz hands. He's still no Payne, but I like it when they give him a little humor rather than playing the straight man all the time. Anyway, after wandering through the tunnels for a bit, Greer finally appears and helps guide them to the entrance to the basement under the old hospital. They find the treatment room and the other two ghosts are there. Melinda asks for Greer's help to talk to them, because apparently it's hard to have a rational conversation with the ghosts of crazy people. Melinda is trying to tell them about the light and why they don't have to be afraid of it when Byrd appears. Melinda tells him he needs to help her but he's not interested, he'd rather hold on to the spirits for his own amusement. See? He is Crazypants. He tells the other ghosts that the light will hurt them. Melinda tries to convince them that he's lying and that they will find peace and forgiveness, but they're still not buying it until Greer chimes in to tell them it's all right and that the light won't judge them. They cross over, but Greer isn't quite ready to go. There's something she needs to do first. And Dr. Crazypants says he isn't going anywhere and disappears. Uh-oh, this can't be good.

In the park, Melinda is with Douglas and Greer. Greer says she feels good knowing that Douglas is OK. Douglas says he never blamed her for what happened (they never do, you notice that?). She tells him to take care of his children and crosses over.

Melinda goes home, and Sam is there. Awk-ward. He still doesn't believe Melinda, and thinks she was manipulating his memories when he was unconscious, the same way Byrd tried to do with the mental patients. Ouch! He thinks she couldn't stand losing Jim and would do anything, and that she needs to get help. Ouch again. She tells him that he's the one who needs help, and that she really tried but just can't do this any more. And the last straw, she tells him to get his things and leave. We can see him hesitate, but Melinda walks away from him and goes into the house. After she closes the door, she collapses against the wall sobbing.

Next week: guess who's hanging out across the street, watching Sam load his things in his truck? We haven't seen the end of Dr. Crazypants, obviously.