Suit against scamming tenant thrown out on technicality

From Curbed:

Even after her landlord hired a private investigator to out her illegal short term rental activities, a resident of 250 Elizabeth Street has managed to avoid getting evicted. Why? Because of a technicality. Before all the Airbnb drama, landlord Ken Podziba actually filed a separate lawsuit against tenant Amy Parness back in 2011 over unauthorized alterations made to her $1,400/month rent-stabilized apartment. And, in housing court, it's not possible to pursue two cases against the same defendant at the same time.