Whether Avalon, Antimony, or Iris, once they found a spy, they generally did not capture them immediately. Instead, they followed the trail, trying to uncover more evidence and even take control of the information the spy sent back.
Once one of their overseas spies was captured, they would immediately arrest some spies who had long been under surveillance and exchange them for hostages.
Spies were obliged to keep as much information secret as possible during interrogation, while the agencies behind them were obliged to buy back any spies captured alive.
Normally, such exchanges were one for one. But if an important spy was captured, they could demand two or even three in exchange for one.
However, Sherlock had left Watson behind not because of his personal friendship with Doctor Watson.
It was because of another very important matter—one the Queen also knew about.
Doctor Watson was a restorationist from the Narcissus Territory. The Narcissus Principality had a fairly good relationship with Avalon, and Avalon strongly supported the restorationist faction there. That was also why Iris had launched the "Bleeding Action" against Avalon.
In other words, Doctor Watson's son Andre was actually a double agent.
Back then, when Doctor Watson sent Andre to the "Chamber," he had pulled some strings. Andre was immediately exiled to Avalon as part of his father's plan... This allowed him to send intelligence to the Narcissus Principality from Avalon with greater ease, while making it less likely that the people in the "Chamber" would discover him.
But over the past few years, the political atmosphere in Antimony had gradually grown tense. Some time ago, the Alchemists and Demon Scholars had even come to blows, committing murders in broad daylight. The superior who had been looking after Andre had now been driven out of the Chamber in