Get ready to bow before "Catherine the Great" this October.

HBO has set a premiere date for the four-part limited series starring Helen Mirren as the Russian empress: Monday, October 21 at 10 p.m.

The drama follows the politically tumultuous and sexually charged court of Catherine the Great (Mirren), who wielded supreme power throughout Russia for nearly half of the 18th century.

Set during the end of her reign, she engages in a passionate affair with Grigory Potemkin (Clarke). Amid scandal, intrigue and immense conflict, they develop a unique and devoted relationship, overcoming their adversaries and together serving as the architects of modern-day Russia through a series of liberalizing reforms.

The limited series was made by HBO in partnership with Sky. It was directed by Philip Martin and written by Nigel Williams.