In Episode 4, we go far back in time to the Byzantine Empire.  Exploring a weapon that changed the game for naval warfare.....just...only for the Byzantines...because no one else could seem to figure out...how to replicate the weapon. Sources:https://www.quora.com/Why-can-t-we-recreate-Greek-fire

https://www.britannica.com/place/Byzantine-Empire

https://www.britannica.com/technology/Greek-fire

https://interestingengineering.com/greek-fire-the-byzantine-empires-secret-weapon-of-mass-destruction

https://en.wikipedia.org/wiki/Greek_fire

https://en.wikipedia.org/wiki/Byzantine_Empire#:~:text=The%20Byzantine%20Empire%2C%20also%20referred,modern%20Istanbul%2C%20formerly%20Byzantium).Music:Thank you to Kai Engel for the use of our theme song "Homeroad". You can find more from them at: http://freemusicarchive.org/music/Kai_Engel/Satin_1564/Kai_Engel_-_Satin_-_09_Homeroad 

 Thank you to Blear Moon for the use of their songs "Watching tower" and "Further Discovery" You can find more from them at: http://secretpress.bandcamp.com. 

And thank you to Sergey Cheremisinov for the use of their song "The Healing".  You can find more from them at: http://freemusicarchive.org/music/Sergey_Cheremisinov/The_Healing/The_Healing.