Nolan quickly covered Malverna's mouth while waving his left hand.
In an instant, both of them turned transparent. A moment later, Rovert stepped out, his eyebrows slightly raised.
His gaze shifted to his right—right where Nolan and Malverna were hiding.
Staying calm, Nolan gave Malverna a quick wink, and she immediately understood.
"Am I just imagining things?" Rovert muttered under his breath. Shaking his head, he pulled the lever on his left, and the bookcase slid shut, sealing the basement once again.
"All settled," he said with a pleased look. "Once that demon wipes out the Valmire family army and drags Aston to the underground prison, the Valmire family will finally fall... hehehe..."
A sly smile spread across his face as he rubbed his hands. Without another word, he left the study and vanished from sight.
Once his presence faded, Nolan lifted his hand from Malverna's mouth and released the transparent spell that concealed them.