Destiny

Another mysterious package arrives at Wolfram & Hart which contains a flash and Spike is instantly made corporeal, which somehow unleashes a mysterious dark force making people violent and among the many infected is Harmony, and later Gunn. With so many employees becoming rapidly violent, Angel calls in a lock-down on the company. As he is doing so, Eve appears and tells him that she knows exactly what is causing the chaos and mayhem which is the Shanshu Prophecy (from Season 1) which states only one vampire with a soul can be the champion of good. Angel and Spike then are forced to dual it out over a mystical grail which one can be made pure.

Meanwhile, a flashback to 1880 London shows the complex relationship of the soulless vampires Angelus and William the Bloody, who later became Spike, which leads to their first feud over Spike's first love Drusilla when he catches her with Angelus in a compromising, sexual position.

Quotes and trivia
The scene with Gunn and Eve talking with the axe wielding man approaching in the background is a homage to In the Mouth of Madness.

This is the only episode since his joining the cast in season 1 that Wesley hasn't appeared in.