After you stop physically blocking the door, Laine searches the room. Then he stands up and turns to you. "Good work, kid," he says. "We've almost solved the Furlbrows' murder. We know whodunnit: The Defias. But to have a really thorough investigation, we need to learn why they did it. Well, do you want to find out with me? Your choice."
Follow Laine. Consolidate your position. Laine is giving you the choice to stay here. Take it.