Bob Smith believed that his home was his "castle," and during the summer months every year, his "castle" was a tiny cabin nestled on the shores of Lake Lewisville.

For several years, Bob's cabin had been vandalized and/or burglarized while he was away.During the winter of 2017, several windows had been shattered.In the winter of 2018, several pieces of furniture had been stolen.At some point during the winter of 2019, the bedroom mattress had been ripped apart for some unexplained reason with foam and fabric scattered about the bedroom floor.On each of these occasions, the perpetrator had forced the front door lock open and had entered the cabin through the front door.

Bob envisioned a way to stop the criminal(s) responsible for these violations.He spring-loaded a shotgun in the living room of the cabin and pointed it directly at the front door.The shotgun was configured so that, if someone opened the front door while he was away, it would fire at the intruder.

Bob returned to his cabin and came upon a grisly scene.The front door had been opened, and at the threshold was the partially-decomposed body of what appeared to be a middle-aged man, dead of a shotgun blast to the chest.Bob immediately called the police.Upon arriving at the scene and briefly questioning Bob, Officer Cruz arrested him.

Was the arrest valid? Did Bob Smith commit murder? Did Bob use justifiable force in this situation?