601 SEASON 4 FINALE

"YOUR MAJESTY, do you expect me to believe that the Juliet who returned to us is a fake?"

"I know it's hard to believe, Marquis Lennox," Nikolai said in a serious tone. "That's why I told you the way to check whether the granddaughter who returned to you is a fake or not."

It was a matter of great importance.

Hence, he summoned the marquis even though it was already an ungodly hour for the emperor to meet his subject privately. He told the marquis to test the fake Juliet using the method that the real Juliet– now Monik– taught him before leaving.

[But we need to expose the fake Juliet as soon as possible.]

Thus, he risked everything even if he knew that the marquis would be offended.