Daniel Sysoev was a Russian Orthodox priest and dedicated missionary born in Moscow in 1974. Serving as the rector of the Church of the Holy Apostle Thomas, he became well known for his vigorous efforts to spread the Orthodox faith among various groups, including Muslims, Protestants, and neo-Pagans. A graduate of the Moscow Theological Seminary, he pursued advanced studies at the Moscow Theological Academy. His life was cut short in November 2009, when he was fatally shot by a gunman inside his church in Moscow.