The Ring (en Inglés) - Dirk Tinglan Dieters

This is the story of a family responding to tragedy and caught in the center of the deadly affairs of others. On moving day, Martin Dougherty's wife is accidentally killed sending the family into turmoil. Martin and his three children, Kristi, Kim, and Ken must deal with a new city and a new life which becomes complicated by their discovery of information that brings with it murder, presidential bids, and extortion by domestic terrorists weaving Martin and the family through a dangerous gauntlet.

The saga moves in erratic fashion from Denver to Tucson; connects with a small town in South Carolina; and affects national politics in Washington DC exposing them to violent forces threatening them and the teenage girl whom they must save to save themselves.