Mike uncovers a mind-blowing collection of vintage baseball cards in Kansas; Robbie and Jersey try to broker a deal in Tommy's "black hole of stuff."

In the thumb of Michigan, a homeowner's inventive great granddad left behind a cutting-edge property complete with a custom zip line, water park, and private speakeasy; at a defunct museum down the road, Danielle closes in on a claw-foot bathtub.