anjelica's gambit worked. while the landlord blamed the tenants for the problems and said they didn't pay rent, she did fix the violations. >> the ultimate goal is to help someone out so they don't have to deal with it. >> reporter: meanwhile in boston -- >> dozens of city inspectors have been canvassing -- >> reporter: there are signs of positive change in the wake of the "globe's" investigation. >> we have found 120 housing violations. >> reporter: the new mayor has led a crackdown where every single student dwelling is being inspected. sadly, many students have already received a costly education in the harsh realities >> anyone know where binlin is? >> reporter: her death a lesson they'll never forget as her young life was cut brutally short in the attic of a boston rooming house. i'm gio benitez in boston for "nightline." >>> next, how these jilted brides found happy endings after their fiances called off the wedding. >>> later, we ask the star-studded cast of "the big short" how they turned a financial c