One Hugs, the Other Doesn't

S10 E16: A Boston performance by children's singer Nanny Gee for Frederick's birthday sheds light on Frasier's past as Lilith and the barflies discover Nanny is Frasier's first wife! Frasier had forgotten to mention this fact to Lilith and when Nanny arrives at Cheers she and Lilith soon get into a cat fight!