Angel (1999) - 4x17 - Inside Out

Desperate to find out why Cordelia has turned to the dark side, Angel goes to demon Skip for answers. Forcing the truth out of him, Angel learns that all that's transpired; Connor's birth, Cordelia's ascension to the higher plane, Angel turning into Angelus and Cordelia's pregnancy, were all a part of a higher being's plan to create something even more powerful than itself.

Meanwhile, Cordelia and Connor go into hiding in order to protect their unborn child. After Cordelia feeds Connor a few lies, he is forced to make a decision, which leads him to a confrontation with his dead mother.