Reading Order
Cal Donovanseries.seoTitleShort
Start with Sign of the Cross and continue through all 5 books in the listed reading order.
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Start with Sign of the Cross
Book 1 by Glenn Cooper • Published 2018
When a young Italian priest develops bleeding wounds like Christ’s, the pope asks Harvard professor Cal Donovan to investigate. As Cal probes the mystery of the stigmata, a neo-Nazi cult hunts a legendary holy relic a...
Complete List
Cal Donovan reading order
Ends with The Fourth Prophecy
- 1
Book 1:Sign of the Cross
Glenn Cooper • 2018
When a young Italian priest develops bleeding wounds like Christ’s, the pope asks Harvard professor Cal Donovan to investigate. As Cal probes the mystery of the stigmata, a neo-Nazi cult hunts a legendary holy relic a...
- 2
Book 2:Three Marys
Glenn Cooper • 2018
Three teenage girls on different continents are inexplicably pregnant, all named Mary and all confirmed virgins. Summoned by Pope Celestine, Cal Donovan races to meet them, only to face disappearances, media frenzy, a...
- 3
Book 3:The Debt
Glenn Cooper • 2019
While researching in the Vatican archives, Harvard scholar Cal Donovan uncovers evidence of a massive unpaid loan Pope Pius VIII took from a Jewish banking dynasty. As interest compounds into billions, church insiders...
- 4
Book 4:The Showstone
Glenn Cooper • 2019
Decades after Cal Donovan’s archaeologist father is murdered in Iraq, his mother dies in a staged break-in and a strange obsidian stone surfaces among her things. Cal’s hunt for the so-called showstone draws him into...
- 5
Book 5:The Fourth Prophecy
Glenn Cooper • 2022
Harvard professor Cal Donovan is summoned by the pope to verify whispers of a lost apocalyptic prophecy. His search from Lisbon to Rome and beyond pits him against ruthless rivals who will kill to unlock—or bury—its c...
Quick Answers
Cal Donovan FAQ
What is the best order to read the Cal Donovan series?
The recommended reading order is the numbered order shown on this page, starting with Sign of the Cross.
How many books are in the Cal Donovan series?
There are 5 books currently listed in the Cal Donovan series on GurusReads.
Where should I start with the Cal Donovan series?
New readers should start with Sign of the Cross, the first book in the reading order.
Is the Cal Donovan series complete?
Based on the publication years we have, the series appears likely complete and spans releases from 2018 to 2022.