The Long, Wrong Trailer by Karen Musser Nortman
This camping RV book is about a couple who buy an RV, not knowing what they are doing.
They decide around Halloween to travel to a local campground and others help them in many ways.
Like hearing of how everything works. Love the hidden spaces for things they need to bring with them.
Others warn them of the con who sold them the RV, problem is he is discovered, dead. What I like especially are the places they venture to.
Like the clues leading to who killed him and how the others at the camp help out. Other works by the author are highlighted at the end.