Good Girl, Bad Blood (A Good Girl’s Guide to Murder #2) by Holly Jackson

After solving a cold case in her small town for a school project, Pip has sworn off detective work. Since then, she has created a successful podcast detailing the events of that investigation. However, her fame has made her friend approach her and ask for her help to find his missing brother. Once again, Pip becomes involves in the investigation and digs out even more secrets from her small town.

A Good Girl’s Guide To Murder by Holly Jackson

Everyone in Fairview knows how beloved high school senior Andie Bell was killed by Sal Singh, who then killed himself. Pippa doesn't think the evidence adds up, so she decides to investigate the five year old case for her senior project. However, things take a turn when it's obvious someone doesn't want her digging into the facts.