It's beginning to remind me of Agatha Christie's "Murder on the Orient Express". Turned out that a whole group of suspects on the train took turns stabbing the victim to death in his cabin so a single murderer couldn't be pinpointed.
In the Zark case, so many informants have been named that no one will ever be able to finger the real rat.
(.....unless some little Middle East-type twerp shows up in a few months at the Monte Carlo Casino with $25 million bucks to play with. We could then make an educated guess or two).
Leni
Enjoyed your humor and allegory.