Such a Quiet Place by Megan Miranda

The accused Ruby returns to town after the trial is thrown out. So, fourteen months after being arrested for killing the neighbors by gas asphyxiation, Ruby walks right into Harper’s home almost like she never left. Harper doesn’t know what to think or how to handle the situation. There’s a neighborhood meeting called, Ruby wasn’t invited, and it’s a reminder to watch for anything or anyone that doesn’t belong. Basically, Ruby. The situation twists and becomes something no one expects. Megan Miranda weaves another mystery worth reading, 5 stars!