Sacraments of Fire

Sacraments of Fire is a Pocket DS9 novel – part of the Deep Space Nine relaunch series – written by David R. George III. Published by Pocket Books, it was first released in June 2015.

Summary

From the book jacket: Days after the assassination of Federation President Nan Bacco on Deep Space 9, the unexpected appearance of a stranger on the station raises serious concerns. He seems dazed and confused, providing – in a peculiar patois of the Bajoran language – unsatisfactory answers. He offers his identity as Altek, of which there is no apparent record, and he claims not to know where he is or how he got there. A quick scan confirms the visitor is armed with a projectile weapon – a firearm more antiquated than, but similar to, the one that took President Bacco's life. But the Bajoran liaison to the station believes that Altek has been sent from the Prophets, out of a nearby wormhole. The last time such an event occurred, it was to reassure Benjamin Sisko of his place as the Emissary. For what purpose has Altek now been sent out of the Celestial Temple?

George announced the novel in October 2014.
The main narrative is set after Revelation and Dust (2385), with the second being set after The Soul Key (2377).
Sisko appears to quote Kirk's line from "Mirror, Mirror" when he tells Odo: "There's an old Human saying: 'In every revolution, there is one man with a vision.'"
Cover art by Doug Drexler and Alan Dingman, based on a Dingman design.
The eBook Rules of Accusation precedes this in the timeline, but was released several months after.