Pip finally meets his benefactor

A dark, dreary night, Herbert in France, Pip alone at home, attempting to read. A knock at the door, a stranger enters, eventually we find it is the convict that Pip helped to free when he was a child. Magwitch. A wanted man in England, made his fortune abroad, made it all with the thought of making Pip into a gentleman. His life is in danger being in London, but he wanted to see what became of his work.  Pip is repulsed. Pip is full of regret and self-loathing over thoughts of how Havisham really was using him for amusement, that there is no agreement for him and Estella, and most of all for his ruined relationships with Joe and Biddy because in his fullness of his own new stature (from his "expectations") he believed himself to be better than his old life, and that Joe and Biddy were people he could cast off in order to impress Estella. Now he knows he was wrong, but feels there is no chance to right the wrongs he has done. He goes outside to get a light and bumps into someone crouching on the stairs, but is unable to find out whom this might be. Magwitch is being followed, it seems.