The situation was quite awkward.
Benjamin never expected these spies would directly direct their accusations at him. Of course, he was not afraid that he would be thought as a spy, but if he was required to produce some sort of identification, the circumstances would complicate itself further.
It would be terribly awkward for him to announce his presence to his students like this.
However, judging from the expressions of Lara and her students, they seemed to not suspect him. Thus, Benjamin used the typical tactic in formulating his defense - he stuttered in fear and looked perfectly innocent and naive, as if he was an innocent townsfolk caught in the game of the Mafia.
"What….. What are you talking about? I don’t know what is going on."
As expected, Lara’s response was satisfactory.