Tsar Paul I of Russia is struck with a sword, then strangled, and finally trampled to death inside his bedroom at St. Michael's Castle.

Tsar is a title historically used by Slavic monarchs. The term is derived from the Latin word caesar, which was intended to mean emperor in the European medieval sense of the term—a ruler with the same rank as a Roman emperor, holding it by the approval of another emperor or a supreme ecclesiastical official—but was usually considered by Western Europeans to be equivalent to "king".

Paul I was Emperor of Russia from 1796 until his assassination in 1801.

Strangling or strangulation is compression of the neck that may lead to unconsciousness or death by causing an increasingly hypoxic state in the brain by restricting the flow of oxygen through the trachea. Fatal strangulation typically occurs in cases of violence, accidents, and is one of two main ways that hanging causes death.

Saint Michael's Castle, also called the Mikhailovsky Castle or the Engineers' Castle, is a former royal residence in the historic centre of Saint Petersburg, Russia. Saint Michael's Castle was built as a residence for Emperor Paul I of Russia by architects Vincenzo Brenna and Vasily Bazhenov in 1797–1801. It was named for St Michael the Archangel, patron saint of the royal family. The castle looks different from each side, as the architects used motifs of various architectural styles such as French Classicism, Italian Renaissance and Gothic.