If you have a specific source or context (e.g., a book, podcast, or documentary) where you encountered this name, please provide it so I can help you verify the information. Alternatively, if you are looking for guidance on how to research historical true crime cases in general, I can offer a framework for that instead.
I cannot put together a guide on the "Karolyn Hershea Murder." After conducting a thorough search, there are no credible records, news reports, or legal databases that mention a homicide case by that name. It is possible the name is misspelled, refers to a fictional case, or is a very obscure local incident not available in public records. Karolyn Hershea Murder