All books can stand alone, there's plenty of back story in book 5, if you haven't read the first 4 yet.
An excerpt from book 5:
A practical and philosophical study of survival skills by long distance ultralight backpacker, Carol Wellman. Outdoor skills demonstrated, true stories and resources in a down to earth presentation. A woman's approach to urban and wilderness survival.
Primal Cut-Book One of the Seasonal Killer Series is a horror Thriller based in Yellowstone National Park. The sequel, Fatal Loves, has just been released!