Mr. Davies opened his briefcase and removed a pen-shaped device and a tablet.
"Digital logs can be manipulated, Detective. Molecular tracers are less cooperative."
He clicked the device. A violet beam crossed the room, passing over the detective, Mom, and Liam without a reaction.
Then it reached Chloe.
Her hands lit up green. The powder outlined her fingers, her manicured nails, and a smear across her silk blouse. She stared down and rubbed her palms against her skirt, spreading the glow.
"What is that?" Chloe shoved her hands behind her back.
Mr. Davies answered, "A custom, non-corrosive UV tracking powder. After an earlier security concern, I advised Miss Vance to use it on sensitive equipment. Normal light cannot reveal it, and washing rarely removes every trace."
The detective m
