Time for another installment of The Accountability Index, our monthly series of conversations with the reporters of the investigative online news journal, The Baltimore Brew. Today, veteran city reporter Mark Reutter joins Tom in the studio to give us the real numbers on Baltimore's vacants - those dilapidated buildings that dot the landscape of so many neighborhoods. They were a hot topic in the mayoral campaign. But Mark -- who's been covering this issue for 40 years -- says the real number of vacant and abandoned houses has been seriously under-reported by city agencies and the media. Why the discrepancy? And how have city leaders allowed this problem to fester for so long?