Fringe

Oak Park, Illinois.

A mom named Diane Burgess gets out of bed in the middle of the night, sneaks into the bathroom and gives herself an injection between her toes.  I'm thinking that's not insulin.  The next day, she gets into a vehicle where a military man asks if she has been taking her serum; she has.  He tells Sergeant Burgess that she has been recalled to active stats and will be making a trip soon.  He gives her a cell phone and tells her to keep it on her.  He leaves her with the warning that TINMAN parameters are in effect.

Olivia is back in the bowling alley.  Sam is thrilled that the headaches have started.  She's not; they hurt.  Sam tells her that the headaches are an indicator that her brain is rebooting itself.  He tells her the next step in her recovery is to keep score for a children's bowling league.  How will that help?  It will teach her patience.

Back in the lab, Peter, Walter and Astrid go over the drug kit.  Walter theorizes that for the amount of serum in Gillespie's body, he would have had to be giving himself an injection every day for over a year.  Peter is surprised; that would mean that the injections started before Gillespie left Iraq.  But Walter has more news.  The injection itself would not cause the explosion.  There is a secondary reaction that causes the bonds to break apart.  Considering the magnetic static, they wonder if it could be radio waves.

Broyles listens as Olivia and Peter fill him in about Walter's discoveries.  They can't get any information on Gillespie's service, or on any of his fellow soldiers.  His unit was exposed to a chemical called cryogen chloride.  They became part of a military experiment  in Iraq called TINMAN that looked for a cure but it is all classified.  Peter says that he can find the doctors but he has to go to Iraq to do it.  Broyles sends him and, reluctantly, Olivia to Baghdad.

Once in country, Peter tracks down a former contact, Achmed, who is not happy to see him.  It seems that Peter was a bit of a cockroach - he always survived and scurried away while others paid the price.  Peter appeals to Achmed to help him save innocent lives.  Achmed believes that Peter may not be the self-centered roach he used to be and agrees to help find the doctor.  When he leaves, Olivia asked Peter what happened.  Peter says he "had to leave a few times."

Back in the lab, Astrid chastises Walter for setting up another fruit experiment. She's tired of cleaning up after him.  (Remember Mr. Papaya?  He was the happiest of fruit before Walter got to him.)  Walter injects a watermelon with the serum.  It crystallizes.  They test various radio waves and discover via BOOM! that the detonation frequency is 331.6MH.