- "When you traffic in danger, you could end up running for your life!"
- — Tagline, from the front cover
Deadly Engagement is the 90th book in the The Hardy Boys Casefiles series.
It's August in New York City, and Frank and Joe are feeling the heat. Jeweler Biju Kumar has asked the boys to find his missing son, Sanjay. But Sanjay may not want to be found. He had secretly been planning to elope with the daughter of his father's worst enemy, and not only is he gone, so is $10,000 worth of his father's gold!
But even as they are drawn into a century-old blood feud, the Hardys begin to suspect that the real danger lies in the mean streets of the city itself. They discover that Sanjay may have crossed the most notorious criminal in New York's Little India. Nobody knows the criminal's true identity -- nobody, that is, who has lived to tell about it!