This video covers the historian Procopius and his works.

Sources and further readings for those interested :
Kaldellis, Anthony: Procopius of Caesarea: Tyranny, History, and Philosophy at the End of Antiquity (2004)
Lillington-Martin, Christopher (ed.): Procopius of Caesarea: Literary and Historical Interpretations (2018)
Cameron, Averil: Procopius and the Sixth Century (1985)
Greece & Rome Vol. 17, No. 2 – Evans, J. A. S.: Justinian and the Historian Procopius (1970)

Prokopios: “The Secret History” Trans. Kaldellis, Anthony/Haury, J. (2010)
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Prokopios: “The Wars of Justinian” Trans. Dewing, H.B.; Ed. Kaldellis, Anthony (2014)
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Secret History Online Version:

Wars Online Version: