Synopsis of Poison à la carte
A group of gourmets, who call themselves the Ten for Aristology, invite Wolfe’s chef Fritz to cook their annual dinner. Wolfe and Archie are included by courtesy.
Twelve young women, one per guest, serve the food — they are actresses supplied by a theatrical agency, and are termed “Hebes,” after the cupbearer to the gods in the Greek pantheon (later replaced by Ganymede).
A member of the Ten, Vincent Pyle, is poisoned and Wolfe quickly concludes that arsenic was administered by a server. Pyle is a Broadway angel, and it’s clearly possible that he knew one or more of the Hebes.
Synopsis taken from: https://en.wikipedia.org/wiki/Poison_%C3%A0_la_Carte