How Mullen Brought Century 21 Into the 21st Century With Fun, Fast Social Ads

'Their little mad scientists'

IDEA: Days before the Breaking Bad finale last fall, a curious home for sale popped up on Craigslist. "3BR/2BA Albuquerque ranch is fit for a king," it read. "Great local schools with dedicated teachers who take an interest in students. … First-rate area camping and RV spots."