The Case

At 9:15 PM, Clara Moore discovered that her famous blue diamond had disappeared from a locked display case in her study.

The diamond had been seen inside the case only fifteen minutes earlier.

There were no signs of forced entry.

Four people had access to the house that evening.

The Evidence

Investigators discovered several details:

• The display case was still locked.
• No glass was broken.
• The study window was slightly open.
• A fresh fingerprint was found on the inside of the window.
• Rain had started outside at 8:50 PM.
• The carpet beneath the window was completely dry.
• James claimed he had never entered the study.
• Helen had cleaned the study earlier that afternoon.
• Victor was monitoring the front entrance throughout the evening.