Mrs.

In the well-heeled milieu of New York's Upper East Side, coolly elegant Philippa Lye is the woman no one can stop talking about. Despite a shadowy past, Philippa has somehow married the scion of the last family-held investment bank in the city. And although her wealth and connections put her in the center of this world, she refuses to conform to its gossip-fueled culture.

Then, into her precariously balanced life, come two women: Gwen Hogan, a childhood acquaintance who uncovers an explosi...