Dancing in the Dark: a Toby Peters Mystery by Stuart Kaminsky
In ten words or less: Mobster threatens Fred Astaire; Toby Peters investigates and dances.

Review: Mobster "Fingers" Intaglia has a girlfriend who wants to be a dancer. The problem is that the girlfriend, Luna Martin, has two left feet and no sense of rhythm. Even lessons with Fred Astaire have proven useless.
Astaire wants out of the arrangement but Fingers won't have it. If Astaire wants to be able to dance another day, he'll teach Luna to dance the two-step. Astaire hires Toby Peters to get Fingers to see the light.

Why bother? Kaminsky's Toby Peters is a charming, if rough around the edges, private eye. The reader can just imagine the sloppy detective teaming up with the dapper dancer. Great fun!