The team pursues leads in search of Tesla's missing notes; the Death Ray prototype and a possible motive for murder.
The team travels to Serbia, Tesla's homeland, and discovers never before seen documents drawn by Tesla himself; the Death Ray build moves ahead.
Following Aron's successful test of his Death Ray, proving the revolutionary weapon could be real, Jack shifts his focus to Nikola Tesla's potential murder. The first suspect sends Jack and Cameron overseas to Serbia to look for clues.