Rudy not "secret agent", but plausibly a police informant
One other thing I hope we can clear up. Del Prato said the cops told her they didn't know what to do with Guede after he was arrested and charged so they let him go.
He wasn't a secret agent put on a train back to Perugia.
Glad to continue this discussion on this point.
I'll look up the quotes from Nina Burleigh and Candace Dempsey's books when I have a chance later. I'm pretty sure they were clear on the reporting.
The reported facts are that Guede was arrested in the Milan break-in. That Rudy was found in possession of stolen items from the Perugia law office burglary a week or so earlier (IIUC, prompting contact from Milan to Perugia).
Subsequently, that a call was made
from Perugia to Milan, requesting Guede be released. A police officer fom Milan was named, and quoted discussing the phone call from Perugia as saying something like, "these things happen from time to time".
Rudy was put on the next train back to Perugia, with his backpack, and according to Steve Moore, with his knife. (Apparently, I have to assume, not the knife that belonged to the Milan nursery, since it was theirs and not Rudy's. But who knows if this detail is correct?).
Five days later, Rudy killed Meredtih.
There is no report of Rudy being a "secret agent" by any reporter or news source I've seen, nor do I personally believe it.
Steve Moore and Bob Graham have speculated that Rudy Guede was acting as an informant for the Perugian police, and had been given a license to continue his burglaries and low level crime to allow him to remain active. (Maybe the police got a share of the proceeds?).
Mignini himself, when asked in an interview by Graham, is reported to have said that Rudy Guede may have been an informant for the Perugian police but he didn't know, and it would surprise him, because people of Guede's background are often approached by police for becoming informants.
Napoleone testified at trial, that Guede was known in Perugia for burglaries, even though he had not been arrested or prosecuted. Bob Graham listed six incidents of Guede's burglaries in Perugia and Milan, in the month prior to Meredith's murder (IIRC).
That's a lot of evidence to just hand wave away.
So IMO - Rudy a secret agent? Not likely, no one credible has said so (AFAIK).
Rudy a police informer - seems logical, likely, and suggested by people knowledgeable and experienced in law enforcement and supported by reporting of credible professional journalists.
As always, YMMV. However, if you disagree, please be specific of which if any of the elements above you think aren't true, or relevant? What is the basis of your position? Anything besides the explanation you provided?