The path usually only followed by the Lasombra. It combines some human element with vampire existence and therefor the followers are called Nihilists though it is an definite misnormer. The path see evil as an compliment to "good" and so the path follow the inherent evilness what is believed to be evil in catholic mythology. The path of night instructs the follower to be believe in their own evilness and that evil serve an higher purpose set by God. The path is mostly based on Catholicism.
The dark ages revised presents a version of the path that do evil for good and intend to serve God.