Accepting the welcome inside, Archer swept into the apartment and looked about with an objective eye. He had to admit that he was mildly surprised by the apartment's state of disarray. It had been so long since Trenton's death - surely she would have cleaned house by now. That was worrisome. With one hand casually hanging from his pocket, he glanced from the messy apartment to Isobel as she guarded the stove.
Brows wrinkling, he took her words at face value. "Oh," he said. "It's lucky that you didn't." Though why the oven would be on when she was clearly not eating was a puzzle. He'd think on it later.
For the moment, he stood with Luther, allowing him to speak. As an officer of the law, he surely had experience with these matters. He nodded as Luther posed the question. "I haven't...seen you in several days," he said, frowning. "I've been concerned."