Born In Death: 23 by J. D. Robb
Eve Dallas has a grisly double homicide to solve when two young lovers - both employees of the same prestigious accounting firm - are brutally killed on the same night. It doesn't leave Eve a lot of leftover time to put together a baby shower for her best-friend Mavis, but that's supposedly what friends are for. Now Mavis needs another favour. Tandy Willowby, one of the mothers-to-be in Mavis's birthing class, didn't show up for the shower. Having only recently arrived from London, Tandy has few friends in New York, and no family - and she was really looking forward to the party. And when Eve enters Tandy's apartment and finds a gift for Mavis wrapped and ready on the table - and a packed bag for the hospital still on the floor next to it she realises something is wrong. Normally, such a case would be turned over to Missing Persons. But Mavis asks for Eve's - and she can't say no. She'll have to track Tandy down while simultaneously investigating the deals and double-crosses hidden in the files of some of the city's richest and most secretive citizens, in a race against this particularly vicious killer.