Ain't Nobody's Business If I Do

Plot:

Daphne finds an engagement ring in Martin's drawer. Appalled at the prospect of having Sherry for a stepmother, Niles hires a private detective to check out her background. Furious, Frasier orders the investigation called off, but not before the detective reports that Sherry has no less than five ex-husbands. Worried that she is unable to maintain a relationship, the boys try to drop hints to Martin. Martin angrily informs them that he's known about her other marriages from the beginning. It turns out, though, that Martin has decided to break up with her because he knows she isn't interested in marrying again.