The Evil Genius—Elliot!

Although they knew that acting to destroy the evidence would expose that they were serpentine devils and get them killed, or even worse, tortured, they didn't care. They didn't give a damn about their lives. The only that mattered to them was disposing of the evidence and keeping the identity of the rest of the spies and undercover members of their organization safe. They couldn't take any risks or wait to verify the truth of the matter!

They had no choice but to act no matter how surreal and fake Arthur's words sounded!

Though, they realized that their sacrifice was stupid and dumb right after the dust cleared up.

The person who they tried to kill and the evidence in his hand that they tried to destroy were still intact! An invisible shield of some sort surrounded them, protecting them from harm. The onlookers realized that it was a barrier, a magic technique only useable and learnable by the loyal dogs of the Elder Magicians.