LOGLINE:
The biggest bust of Henry's career just walked out of jail on a technicality, so Shawn and Gus must revisit the seventies to reinvestigate the case and put the culprit behind bars for good.

SYNOPSIS:
Chief Vick calls Shawn and Gus down to the station after a handful of old convictions get overturned.  They have to reopen the all the investigations and need Shawn's help on one in particular – Eugene Franks, who was caught with explosives meant to bomb police headquarters.  It was the biggest case of Henry's career but Vick stresses that he can in no way be involved in the investigation.  Henry's no longer on the force and could compromise any new evidence they find.  But by the time Shawn and Gus get back to the Psych office, Henry is there waiting for them and wants in.  Shawn refuses.  As Henry leaves, he stresses that he knows he got the right guy and stopping him saved a lot of lives.  

Shawn and Gus need to learn more about the case, so they go to the D.A.'s office where Henry is once again already there waiting.  They ask the clerk for transcripts of Eugene's original trial, and when he leaves to make them a copy, Shawn tells Henry can tag along on their investigation but he needs to stay out if sight and more importantly, Shawn is in charge.  Henry agrees.  When they get the transcripts, Shawn sees that the D.A. admitted only one piece of evidence.  Henry tells them the case was so strong, they didn't need to use all of it.  A different, unquestioned warrant was used to obtain the evidence that wasn't used and is still in the county archives.  They need a look at that evidence, but Gus refuses to drive as his boss is now checking his mileage and Henry's truck can't be spotted anywhere near the investigation.  So they cab it to the archives where they find a pawn ticket dated a few days before Eugene's arrest.  Gus knows the shop.  It's still open.  Henry suggests they go check and see if Eugene ever had a chance to buy the item back.

At the pawnshop, they learn that Eugene pawned the title to his car, which was then resold.  But they find the VIN number, which they can use to track where the car ended up.  Unfortunately, that could take them all over the city, which would expose Gus' and Henry's involvement in the case.  Shawn looks around the shop and gets an idea – they will disguise themselves in vintage 70s clothes.  They track the car to a salvage yard but the worker won't let them search the car unless they buy it.  After they give him all the money they have on them, most of it being Gus', Shawn spots a faded outline of an old window sticker and Henry notices new soldering under a floor mat where a smuggler's hatch was installed.  Inside they find a roll of film, and after they get it developed, they see a picture of Eugene with a man and a woman they've never seen before, all three wearing berets and holding guns.  Henry remembers one of his old snitches, Pookie, who knew everyone back then.  Chances are he'll be able to ID them.  

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