There's a endearing quality to a lot of the old Hammer double features, the ones typically made in tandem to save costs and so they could be screened together. So in this case it's not a surprise that a lot of the cast members and several sets are clearly the same as those in Dracula: Prince of Darkness. But watching them back to back decades after their intended release format it's more of a trivia point than a real flaw, and noting all the recurring scenery is lots of fun. The writers play it fast and loose with the facts in this vaguely historical thriller in which Christopher Lee dons a beard and drinks his way to the top of Russia's social ladder. As he sates his less than pious ambitions it's very obvious this is not an educational film, but that should be pretty apparent from the title alone.
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