This is a really good episode and marks the point when Paige's relationship with her new sisters really begins.
Piper (Holly Marie Combs) is amazing in this episode. From her determined attitude to her anger when being a Fury to the heart-breaking scene at the Prue's gravesite she shows that she is one hell of an actress. Her anger is shown perfectly in her conversation with Leo in the bedroom. She is utterly cruel to him (which Leo deals with quite well) and is another display of Combs acting ability
Paige's character is developed in this episode. We see her as a kind and caring person who dearly wants to help her co-workers. She is obviously handling her magic well and shows that she will make a very good sister with her ability to see why Piper is really mad.
The final scene where Piper goes to thank Paige is really sweet and shows that the formation of the bond between the two sisters. My favourite bit of this episode comes at the end when Piper acknowledges that Paige is her sister for the first time. Very touching
Cole is a little harsh towards Piper (and Leo) and I feel he could've given her more support in this episode.
I have a feeling that this episode marks the last time that we see over-dramatic mourning for Prue therefore marking the end of Prue's time on the show. I'm not saying she won't be remembered but definitely less from now on.
This is a wonderful episode and paves the way for Paige to begin becoming a true Halliwell