"Need You Now" (Harper/HarperCollins), by James Grippando: James Grippando's new stand-alone novel, "Need You Now," shines the spotlight on Wall Street and Ponzi schemes.

Abe Cushman runs a Ponzi scheme that has netted billions of dollars. When the pyramid begins to fall, Cushman takes his own life. Patrick Lloyd, a financial adviser on Wall Street, learns that his girlf.....