Simon and Eugene discuss massively violating the chain of evidence, the well-known Stockholm Guidelines on hostage situations, and getting to the point where a show can’t be bothered with an in-show explanation for obvious plot contrivances.
There’s a big deal on down at the station. Det. Gareth Oldroyd has come to Chief Grissom with a potentially very high-profile arrest. Lenny Gebler, a major fence from “up north,” is coming to London to purchase a £2,000,000 haul of stolen diamonds. There’s just one problem, Slade is uncomfortable when he hears Oldroyd’s name, just as Oldroyd is similarly unsettled by Slade’s name.
Oldroyd goes to Grissom and asks for Slade to be taken off the case, you know, because of what happened with his father. Grissom refuses because the sins of the father are NOT transferrable to the son.
Oldroyd’s planned raid relies on Turner, a physicist, to validate the diamonds on the spot, which is… odd, but that’s apparently what police science officers are for.
The raid goes a bit poorly, with Oldroyd being taken hostage, but Slade drives through the wall, saves the day, and recovers the diamonds. Turner validates them, then Oldroyd tags them and puts them in an evidence bag. No, strike that, wraps ‘em up in their pretty little velvet pouch and puts ‘em in his coat pocket.
Later he hands a pretty little velvet pouch over to Grissom, who inspects them, tags them, and puts them in an evidence bag. No, strike that; she just hangs on to the unopened pouch until she puts them in the evidence lockup back at the station. No, strike that; she just puts them in her safe in her office.
That night, having a couple of drinks with Turner, Slade cracks just a little. Oldroyd was his father’s partner on the police force before his dad “retired,” but he’ll give no more information. Turner also wonders why Lenny the fence didn’t bother to bring the money if he was planning on buying the diamonds. Well, I guess that doesn’t matter; they caught him. They part ways, and Slade is attacked when he gets home and drugged. He is left on a park bench all night.
The next morning, the diamonds are gone, and for some reason that’s not entirely clear, Slade is the number one suspect, but it must be a good reason because they get a magistrate to sign off on a warrant to search Slade’s house. I mean, I assume they got a search warrant. And rightfully so, too, because they find a token amount of the diamonds hidden inside an ice cube tray.
When confronted with this “evidence,” Slade points out he couldn’t get into the safe because he doesn’t know the combination, but Grissom tries to prompt his memory by saying the combination out loud, which would only be useful at this point if he had a time machine!
Just as he’s about to be arrested, the fire alarm conveniently goes off, Slade makes a break for it, and a convenient office trolley shoots out in front of Morris and Oldroyd, giving Slade some distance. The officer in the evidence lockup is actually locked in, giving Slade an additional edge in his escape.
Someone must be really watching over him because Morris’ car is sitting in the garage, doors unlocked and the motor already running. What a lucky break, as Slade makes a clean getaway.
He heads straight for Turner’s time machine, of course, as does Turner. This is not lost on Morris, who has noticed those two spend a lot of time together. He and Oldroyd follow Turner back to her place.
In the nick of time, they go back in time, about a day. They witness the raid, follow the diamonds, and spend the night in Grissom’s office waiting to see who really steals them, but when they get bored of that, Slade opens the safe – with the combination that Grissom tells him in the future – and finds they’re already gone. They were never in the safe! WTF?! But how can that be? The chain of evidence is so solid and unbroken?
Knowing that Slade has already been knocked unconscious and left in a park, they go to his flat and remove the incriminating diamonds from his ice cube tray. No, strike that; they have a drink and talk about Slade’s father.
He’s not exactly “retired” from the police force in the traditional sense; he’s actually in prison. He was arrested for taking money from a bank robbery investigation and has intentionally estranged himself from Slade.
The next morning, early, they visit Old Man Slade in prison and learn that not only are the circumstances of his arrest almost identical, but the players are also the same, too. What an amazing coincidence. Slade realizes that Gebler must be behind it. He goes to the station and questions Gebler about the missing diamonds – before they’re actually discovered to be missing. Time travel, remember? The questioning fails to produce any results, but while there, Slade helps himself escape by activating the fire alarm and pushing the office trolley infant of Morris.
Turner does her part by getting Morris’ car ready for Slade’s escape.
Next, Turner anonymously calls Grissom and asks her to release Gebler, which she does.
Turner and Slade follow Gebler, overhear a conversation that the real exchange happens that night at 7, and then hoof it back to the time machine just in the nick of time.
While this is going on, Old Man Slade has an idea and wants to call his son. The warden won’t let him, though, so he escapes from prison, as you do when they won’t let you make a phone call.
As time is re-synchronized, Slade gives himself up, and in interrogation, he admits he did it and that he’ll turn over the diamonds at the appointed time and place of Gebler’s meeting. Oldroyd thinks this is BS and refuses, but Grissom overrules him. They go and watch, and when Gebler arrives, they send Oldroyd over to arrest him.
The meeting goes like this: Oldroyd walks… oh god, I can’t even… no, I can do this. I can do this.
Oldroyd walks towards Gebler under the watchful eyes of Grissom, Morris, Turner, and Slade. As he approaches Gebler he pulls a gun and shouts loudly at Gebler, “Freeze! Don’t move. Police! You’re under arrest!”
No, one last time, strike that. He walks quietly and slowly towards Gebler. Gebler shouts at the top of his lungs, “we did it; we got away with the diamonds; I can’t believe they’re so stupid to fall for that again, yippy-doo-dah-day! It’s the Bahamas for both of us, my faithful partner in crime, Detective Oldroyd!”
Or something very much like that, and so they go to arrest them, but Oldroyd turns out to be a partner-double-crosser and escapes in Gebler’s car, only to have Old Man Slade, still on the run from prison, run him off the road.
Everyone’s exonerated, and Turner and Slade have newly-released Old Man Slade over for dinner at Holly’s flat. A good detective at all times, Old Man Slade can’t work out how they came to visit him about the crime while he was unconscious in a park before the robbery was discovered. And, Holly Turner… you’re the daughter of Fredrick Turner? The guy who wrote a book in the prison library about Time Travel? He might have to read that book someday.