The fluid level in Cynthia's drink changes noticeably as she walks across the room as Gideon throws her out for his phone call.
Jessica and the students are doing the archaeology dig entirely incorrectly. Artifacts are never removed from their location until they are measured, sketched, and photographed.
The Archaeology Team is digging on the Navajo Indian Reservation, but digging for Archeological Artifacts is illegal to do on American Indian Reservations.
In some wide shots of the scene where Jessica reveals the murderer, a crew member in jeans and a green shirt can be seen at the left edge of the screen.
The archeologist talk about iguanas at the dig site in New Mexico that is very unlikely since they are not native to the state.