The Missing Medium

While Father Sean O'Malley is summoned to Rome to discuss the "Longborough Affair" with his superiors, Russian anthropologist Anna Rykov and Doctor Harold Lamb travel to New York City where they encounter merchants, mobsters and madmen in pursuit of the spirit medium who advised their mentor shortly before the start of the whole adventure. The Missing Medium is a pulp adventure set in the 1920s, and the second book in the Utgarda Series.