As he is walking towards the crime scene, Gibbs says this wasn’t an accident.
Suddenly, fans are taken to an unknown location where a mysterious person is watching the crime scene on CCTV.
The person then fires what looks like a missile at a small grey building which was clearly key to the murder.
Viewers then see Chief Medical Examiner Jimmy Palmer (Brian Dietzen) slouched down on the ground looking puzzled.
source: express.co.uk