Doubt

"I definitely won't do that young master."

"Really? But why is it so hard for me to believe you?"

Muscle was stunned by his words. He is already shit scared that this young master might check Sam and his friends. But now hearing these words is just adding to his worries.

"Why are you suspecting me young master?"

But at least he kept his cool for the appearance sake.

"The person we are talking about is someone I investigated very closely and from the way he operates, it doesn't make sense for him to just come to your place and not do anything before he left.

Do you what would have been more believable?

Him attacking you and even killing you. Him destroying your arena and your business. Him creating a conflict between you and another subordinate. Him destroying your subordinates' lives in a seconds and finally you cooperating with him and trying to screw over the organization.

He is intelligent, resourceful and devious."