This new evidence leads you back to the museum. You want to check the security camera videos from the museum days before the crime again.

Videotapes from days before the crime have been recovered and one is of particular interest. A trio is shown entering the museum very soon after it opened; a tall, middle-ages ma, a portly woman with a diamond ring, and an older man matching the description Janie Clark gave are shown. Because of their distance from the cameras and the strange camera angles, you are unable to make out much facial detail. In fact, most of the time the trio was at the museum, their backs were to the cameras. It looks as though they knew about the cameras and actually turned so that they'd be facing away.

The black & white video also makes it hard to determine details such as hair color. Something Janie never mentioned: a backpack is apparent. The old man has a backpack slung over his shoulder. The color of the bag cannot be determined but the type and shape of the bag appears to be rather common.

Now that you’ve seen this footage, any thoughts?

Based on the new evidence, it seems likely that the trio seen in the video may have been involved in the crime. The fact that they turned away from the cameras suggests that they were aware of their presence and may have been trying to conceal their identities. The backpack carried by the older man is also suspicious, as it could have been used to transport stolen items from the museum. It would be important to try and identify the individuals in the video and investigate their possible involvement in the crime further.