Again, Caitlin waits for Parker in the desert before the guy gives her the information of the architect who works for Brian's mansion. Every worker details and the house floor plan too.
After getting all of the information, Caitlin drives to each of the locations of the worker. She is asking them about the house structure. For nearly a week, she's been working on this case, and all she can conclude is Prof. Lisa, Brian's wife, totally the one who design the house.
She's the one who designs the house, and there are a few workers admit that they had to move a few of the supercomputer into the detached building from the main mansion. There's also a hidden bunker, but they didn't really know about that place.
They thought it just a safe bunker, but Caitlin doubts it. Why she design the shelter under her lab? For safety?