This is the second book in the Gus the Ghost-Face Dog series.
Two cousins, Ethan and Calum (Cal), spend their summer vacations and holidays at their grandparents' ranch in the Texas Hill Country. In this book Ethan and Cal discover a ghost, with his horse, who helps them find a time capsule that has been missing for 80 years! With the help of their grandparents, the boys are able to help a boy their age to have the life he has been praying for.
In the second story, Ethan, Cal, Gus, and Luke rescue a brave little girl named Skyler from a flash flood.
In the third story, Ethan and Gus go back in time and make friends with a pioneer boy named Tommy. Suddenly they are confronted by a screaming panther.
There will be more great adventures to come!