Vader enters the building almost calmly at first, through there is a rising air of burning hatred at the mention of that name. But he holds it back. For now.

"Anakin is dead. He was left to die back on Mustafar."

His stare is cold and dark, and if he had the ability, he would have burned a hole through Obi-Wan with just his gaze alone. He stops a few feet away and it takes all of his constrained willpower to not just end it in a swift moment.

No, he couldn't do that because he needed to savor this.

"You left him there. Certainly you remember."