Fringe

Back at the lab, Peter and Olivia go over the sheriff's reports, which are asinine and filled with useless information and are an affront to small town sheriffs everywhere.  Walter announces that he will have to urinate in 23 minutes, which is not the non-sequitur he usually spouts.  He's been examining the blueish, gooish object from the field and it appears to contain a paralytic.  The files do contain one piece of useful information.  One man named Hughes was spotted at more than one of the disappearance sites.

Somewhere under Lansville, a light sways in a tunnel.  Hey, maybe Construction Worker Guy got away.  Nope, this guy has two feet.  Who is it, I wonder?

Peter and Olivia arrive at the Hughes residence.  The porch is covered in dirt.  Mr. Hughes comes up behind them, also covered in dirt, and informs them that he's been working on water pumps - a very dirty job.  He invites them in.  Olivia's hearing kicks in again and she thinks someone is hiding in the house, although Hughes said that there was nobody else home. 

Olivia goes upstairs, trying to locate the noise she's hearing.  After searching one bedroom, which has been turned into a lab, she's startled when she hears something in the hall.  She turns and fires before she sees Peter standing in the doorway.  There is a bullethole in the wall about an inch from his head.

Mr. Hughes is now a guest of the F.B.I.  He admits to checking in on the families of the victims because he knows what it is like to lose family; his wife died during childbirth almost 20 years ago, and his son survived for only minutes before passing away too.  That is when he quit being a doctor.   He refuses Olivia's request for a blood sample and Broyles agrees to hold him for 24 hours, giving them time to investigate his lab.

Olivia goes in for a medical check-up.  She has a huge bruise on one of her shoulders.  Nina Sharp pays her a visit and gives her the number for Sam Weiss, a man who helped her deal with her changes.  Olivia tells her the F.B.I. has psychologists, but Nina informs her that Sam isn't that type of doctor.  (Gollum and Sam Weiss/Samwise in the same episode - LOTR rulz!)

Junior Agent Jessup is part of the team searching Hughes's house.  She pays significant attention to the religious icons. In the family Bible, she finds an article that indicates that Hughes's wife and son may not have had the natural deaths he described.  Astrid has no trouble getting exhumation orders for Mrs. and Baby Hughes.

Hughes does not respond well to F.B.I. custody.  He starts chewing on the furniture.  Or, at least, the light fixtures.  He's removed the safety cage from the ceiling and is retwisting the wires into something else.

The exhumation is gross.  Mom's skeleton looks likes it's grimacing in  pain.  The baby's casket... is empty.  There is a hole in it.  It appears that something burrowed it's way in.  Or out.

While Peter and Olivia are at the cemetery, Mr. Hughes does some fancy rewiring and turns the safety cage into an noose.  Oh, the irony.  He hangs himself in the interrogation room.