This showdown occurred on Perilious, a planet, in 22 BBY. It involved a male Jedi facing off against Vydel Dir'Nul, a one-time Jedi Knight who was secretly Kardem, a serial killer. The confrontation concluded with Dir'Nul, acting as Kardem, killing the Jedi dispatched by the Jedi Council to apprehend her.
The comic entitled "Dark Journey," penned by Jason Hall and published in Star Wars Tales 17, marked the initial appearance of this duel.