A Mist of Prophecies is a historical novel by American author Steven Saylor, first published by St. Martin's Press in 2002.

It is the ninth book in his Roma Sub Rosa series of mystery stories set in the final decades of the Roman Republic.

Meanwhile, in Rome, the beautiful and mysterious seeress called Cassandra is poisoned, and dies in the arms of Gordianus in the market.

With no one to claim the body, Gordianus makes her funeral arrangements which is surprisingly attended by the seven most powerful women in Rome—Terentia, Antonia, Cytheris, Fulvia, Fausta, Calpurnia, and Clodia.

Finding her on the temple steps, on the very day Gordianus first laid eyes on her, Fabia took her in and then introduced her to Terentia with the pair believing in Cassandra’s gift of prophecy.

Housing her for the next couple of days, Fulvia finally received news of his death, confirming Cassandra’s vision.

Meanwhile, Gordianus continues reminiscing on his time with the young Cassandra in flashbacks, including the start of their affair while his wife of many years lay at home dying.

Quickly noting that Gordianus had been in love with Cassandra, he shares his belief that the seeress’ death was related to Milo and Caelius’ revolt.

Momentarily gaining consciousness, Gordianus overhears Caelius arguing about keeping him alive due to a promise made to the witch, presumably Cassandra.

Using the intel she received from Caesar, Cassandra would then fake a fit and utter a “prophesy” based on what she knew about the person.

Getting wind of Caelius’ plans, she orders Cassandra to give him and Milo a false prophecy of doom to stop their revolt.

Before Caelius set off, he sent Clodia a note sharing that Cassandra had prophesied a victory to Milo, against Calpurnia's direct orders.

In the letter, she requests that Calpurnia give Gordianus the money she earned as a spy to pay off his debts in return for him adopting Rupa.