As a young single parent, Mackenzie Elizabeth Taylor has struggled to provide for her teenage daughter. She finally catches a break when she inherits half of an apartment building in Boston from her uncle Al...along with his P.I. business. So what if she doesn’t know the first thing about investigation or if their hot-but-crabby downstairs tenant is a police detective who’s looking for any excuse to handcuff her? Her daughter, Mac the computer whiz, has her back. And these two girls don’t know the meaning of the word quit.