Complex sentence: In 1999, Gregory Gibson, the father of Galen Gibson, wrote and published Gone Boy-A Walkabout (Kodansha America), a detailed book recounting the shooting and Gibson's search for answers in his son's death.
Split into simpler sentences: In 1999, Gregory Gibson, the father of Galen Gibson, wrote and published Gone Boy-A Walkabout (Kodansha America). A detailed book recounting the shooting and Gibson's search for answers in his son's death.