Neighbor Watchers-book 1 -Amazing Gracie Mystery Series
Book 1 is about Gracie Evan's retirement to Locked Rock, Iowa. She moves into a retirement home and finds she's bored. She and another woman tear holes in vines on the front porch so they can spy on the neighbors. Seems like harmless snooping until they see the killer of a woman across the street. Gracie is scared she and the other residents will be killed next since they know who the murderer is.