Who: Luke Skywalker, whoever else
Where: the dollhouse room, and around
When: Day 002
What: It said to ask the house, so Luke asks the house. And the dollhouse. And stuff.
Luke wasn't much good at mysteries on his own; he couldn't help but think how interesting Ben would find this. His time with the GA Guard would have served him well. Luke could almost see his son, standing in this wierd room of dollhouses, turning this way and that and putting things together in his head.
Thinking about Ben made Luke's heart hurt, so he turned his attention to what was in front of him. All the other dollhouses had their doors locked, so he was facing the unlocked one.
Ask the house, the message had been. Ask it what? How did you ask a house something? Did it mean the dollhouse, or the house the dollhouses were in? Luke decided to start small, and... well, obvious. Mara would have laughed at him, but hey, investigations started somewhere, right?
"What is it you want me to ask?" he asked the house, and tried not to feel totally silly.