Chef Robert Irvine is in Palos Hills, Ill., to help save the Valley Inn restaurant. Once very profitable, the death of Frank, Sr., combined with a difficult economy, has left the restaurant struggling to bring in customers.Chef Robert Irvine is in Palos Hills, Ill., to help save the Valley Inn restaurant. Once very profitable, the death of Frank, Sr., combined with a difficult economy, has left the restaurant struggling to bring in customers.