Buffy The Vampire Slayer: 10 Best Spike Episodes

Intervention kicks off by painting Spike in a pretty bad light, as he begins having relations with the Buffybot he made Warren Mears make.

Desperately in love with Buffy but knowing nothing will ever happen between them, Spike hits rock bottom. Unfortunately, his new past-time leads Glory's minions to think he is The Key, and so he's kidnapped and tortured by the god until he gives up Dawn.

But he doesn't. No matter how much Glory cuts him up and beats him, Spike doesn't betray Buffy or her sister, and after making a haphazard escape, he goes back to his crypt and tends to his wounds.

There, Buffy tricks him and acts like the Buffybot in hopes of figuring out whether he betrayed her, and upon learning he didn't, she kisses him and realises he can be a good person. It's a moving moment, and remains not only a badass display of how cool Spike can be under pressure, but also a key turning point in the rest of his arc.