This is a very serious installment of the Eusebius' Ecclesiastical History of the Church. With a focus on martyrdoms, heresies, and unpleasant judgement events.

Book 5 has 28 chapters in it and due to its content, it's a difficult read. Therefore this summary does you the favor of explaining what that book contains without forcing you to muddle through such hard content.

Chapter 1 - Stories about the deaths of Christian Martyrs
Chapter 2 - The 10 martyrs who abdicated their faith relent
Chapter 3 - The story of a man who was so poor, his imprisonment was an upgrade
Chapter 4 - The martyrs respected Justin Iranaeus
Chapter 5 - God intervened in war and chased the enemy with lightning bolts to save his people
Chapter 6 - The succession of bishops in Rome
Chapter 7 - The state of Miracles in the church
Chapter 8 - Clues given about the antichrist
Chapter 9 - The real story behind the Septuagint Bible
Chapter 10 - The school of the faithful
Chapter 11 - The Clement of Alexandria who wrote Stromata
Chapter 12 - The bishops of Jerusalem
Chapter 13 - Rhodo challenges Marcion and Syneros
Chapter 14 - The heresy of Montanus
Chapter 15 - Florinus and Blastus split the church
Chapter 16 - Marcion is possessed by Satan and it gets weird. He hangs himself like Judas

For the full series click here: https://www.thebookmatrix.com/2020/01/eusebius-ecclesiastical-hisory.html