Frasier's mercurial ex-wife Lilith (Bebe Neuwirth) is back in town, and as usual she wants a favor. This time around, Lilith is determined to have another baby -- and she wants Frasier (Kelsey Grammer) to be the father. Although her plan is to rely upon artificial insemination, Frasier will have none of it, forcing Lilith to use a bit of -- yes -- psychology on her former husband. Meanwhile, Niles (David Hyde Pierce) goes ballistic over a "dirty" photo of Daphne (Jane Leeves). ~ Rovi