De Umbris Idearum (short story)

 was the thirteenth and final story in the anthology Burning with Optimism's Flames. It was written by Philip Purser-Hallard. It heavily featured the character Imogen Tantry from the Bernice Summerfield short story Predating the Predators and the Remote.

Publisher's summary
Wailing's Lace, 2621: The Pope's xenotheologian, Monsignora Tantry, investigates disturbing reports of a force disrupting the delicate balance of religious politics in the habitat – a cult known only as the Remote...

California, 2012: Concerned by the behaviour of one of his students, Father Gerard Evangelista attends a sinister party at the Theatre of Memory – a party which is also, in a very real sense, a revival meeting.

London, 1584: The excommunicated heretic Giordano Bruno's sorcerous experiments yield some surprising results, and the discovery that he holds the Church’s very future in his hands.

The Eleven-Day Empire: Father Self of Faction Paradox sets his alarm clock, and considers an intervention which will touch the lives of three priests – and, incidentally, shape a millennium of history.

Summary
to be added

Characters

 * Monsignora Imogen Tantry
 * Father Jakob Naguib
 * Gerard Evangelista
 * Giordano Bruno
 * Father Self

Continuity

 * Imogen has access to the Collection of Necessary Secrets. (PROSE: Christmas on a Rational Planet)
 * Imogen recalls the "appallingly inhuman terror she faced on Murigen". (PROSE: Predating the Predators) She has learned that the creatures she encountered on Murigen were Mal'akh. (PROSE: The Book of the War et al)
 * Imogen Tantry will become Pope Beatrix II. (PROSE: Predating the Predators, Unification Theory, A Hundred Words from a Civil War)
 * Brown was taken to Anathema. (PROSE: Interference - Book One)
 * Human contact with the Remote has been reported since the late 20th century. (PROSE: Interference - Book One, Interference - Book Two)
 * Father Self appears. (PROSE: Of the City of the Saved...)
 * The Pope Beatrix II Memorial Library and Ivan G Ikigikato previously appeared in PROSE: Predating the Predators.