Margaret at War

After a troubled summer, peace has returned to the wealthy town of Greenwich. Until Bethany's sister and parents are murdered and Erika's billionaire father meets Polly, a beautiful young woman who marries and murders older men for their fortunes.
Determined to defend her friends, Margaret goes to war but she has allies too: Hillary, an eighth grader who dreams of marrying "Bill," the former American president who lives nearby; Vladimir, a retired general of Russia's Presidential Security Service; a disabled lawyer, Margaret's father; and fourteen-year-old Randy who is the love of her life.