ellen: steve croman has bought up many buildings. something like 100 buildings. been unusually active in de-tenanting. because when you get the tenants out, you can increase rent a lot, especially if you renovate. he has been very aggressive. give it away, but very aggressive in his tactics. let's say you do not want to live some of the way these tenants are living. carol: a really looks into rent stabilization. we talked to the reporter on this story. >> key made a calculation, and that was i will invest in all of these buildings. perhaps knowing they will skyrocket in value. the catch is this -- of those buildings were filled with lower income or middle income people who did not pay much for their apartments. what stephen acromion -- what stephen cronan is alleged to have done is systematically worked to make their living conditions miserable in the over 140 buildings he owns in order to get them out. once you get them out, you place them with higher paying tenants. all of a sudden, you are sitting on a lot of money. carol: you actually talked with some people,