The Ripple Effect by Phillip Yow

In book #2 of The Ripple Effect series, the Killerman twins, Sebastian and Samantha continue to struggle with leaving their home in Iowa after their mother is murdered. With the murder unsolved, they move with their dad to Texas and try to go on with their lives and all the struggles and temptations that high school brings. They continue to look for hope and forgiveness as they move on with their lives.