Ralph Compton Shot to Hell (The Gunfighter Series)

Fourteen-year-old Leif Gunnarson returns from school to find his family home on fire, and a gruesome scene inside: his parents are on the brink of death amongst the flames, and his sister is gone. His father gasps a name: Luther Simkins. Leif has his life's mission: track down Simkins and find his sister. Along the way, Leif finds a temporary home in Wyoming Bob's Wild West Show. He has an innate skill with firearms but needs to learn to outshoot anyone, even Simkins. Then Leif finally gets wind of an outlaw who could lead him to his sister. It will be the most important showdown of his life - but will his sharpshooting be a match for the outlaw's tricks?