The Professor is trying to guess what Sam said to the trio.
He is extremely curious. At first, he didn't think much about the trio as he didn't think much of the people they defeated.
But these flashy tricks and teamwork made him think otherwise. Of course, the biggest contribution to that thought is still the fact they dealt with the Green Cloaks.
Now he is thinking about whether his bet has been the right choice.
That is why he wants to know just what exactly Sam said. He even wanted to send a shadow to the forest and take a look at the situation.
But while he was doing so, an attendant came running to him and gave a slip.
'Don't even think about it.'
That is the content of the slip. He frowned and looked at the attendant who pointed his finger towards Sam.
Sam gave out a smile as he looked at the professor which made the latter feel like he got caught red-handed. He recalled the shadow immediately and cursed under his breath.