The midnight line
Lee Child
Summary: "When 13-year-old Jace Wilson witnesses a brutal murder, he's plunged into a new life, issued a false identity and hidden in a wilderness skills program for troubled teens. The plan is to get Jace off the grid while police find the two killers. The result is the start of a nightmare. The killers, known as the Blackwell Brothers, are slaughtering anyone who gets in their way in a methodical quest to reach him. Now all that remains between them and the boy are Ethan and Allison Serbin, who run the wilderness survival program; Hannah Faber, who occupies a lonely fire lookout tower; and endless miles of desolate Montana mountains. The clock is ticking, the mountains are burning, and those who wish Jace Wilson dead are no longer far behind"
When Jace Wilson accidentally witnesses a brutal murder, his life is changed forever. An ordinary teenager growing up in Indiana, Jace is suddenly forced into the Witness Protection Program and given a new name and history. Taken in by a couple who run a wilderness program for young boys, Jace finds himself hiking through the Montana mountains, tortured by his memories and by the fear that he'll never be safe again. The killers, known as the Blackwell Brothers, are two of the most heinous criminals the country has ever known. Jace was the one person to catch them in the act, and he slipped through their fingers. Now they've tracked him down and are making their way across the country, ruthlessly slaughtering anyone who gets in their way.