The storm raged outside as Detective Johnson arrived at the old mansion. Lightning illuminated the crime scene, casting eerie shadows on the walls. The victim lay in a pool of blood, a knife plunged deep into his chest. The detective carefully examined the body, searching for clues. The room was in disarray, suggesting a struggle had taken place. As he scanned the scene, a piece of paper caught his eye. It read, "You were wrong to trust him." The detective pocketed the note, his mind already racing with questions. Who would want the victim dead? And what was the significance of the cryptic message?