With Molly Murphy's wedding to NYPD Captain Daniel Sullivan quickly approaching, the Irish P.I. heads to the Westchester County countryside, where Daniel's mother can counsel her on a bride's proper place. Surprisingly, Molly seems to be agreeing with her future mother-in-law's advice. Molly promises to leave her detective work behind and settle down after becoming Daniel's wife, but she isn't married yet. So when she gets word of a possible case, Molly sneaks back into the city to squeeze in a little more sleuthing before the wedding bells can ring. A wealthy Chinese immigrant wants Molly to find his missing bride. Molly has a hunch that his intended has run off. But where could she have gone - and where would she be? The only Chinese women of the era are kept under house arrest and Molly can't help but wonder whether she's saving the bride-to-be from the streets or helping to lock her away for good.