Sven Holmberg

Season Four premiere. A behind-the-scenes documentary look at the filming of 'Medellin' on location in Bogota, Colombia. On set, Eric and Billy clash over keeping the film on schedule and Billy develops an infatuation with Vince's beautiful Colombian co-star that becomes increasingly disruptive to the production. Meanwhile, Drama tries to angle for a part in the film, and Ari provides color commentary from his L.A. office.

After a long absence, Christopher reappears in Lorelai and Rory's lives with an offer to make up for lost time; Lane deals with Zach's jealousy over a song Brian wrote about her.

With Nadia's life on the line, Sydney must race to bring down former nemesis Anna Espinosa (Gina Torres, "24"). Meanwhile, Vaughn's inner demons surface when, in order to help Sydney save Nadia, he's forced to confront his own former nemesis, the slippery and deadly Mr. Sark (David Anders).

While working a blackmail case Angel encounters Charles Gunn, the leader of a gang of street kids battling a nest of vampires who’ve settled in their neighborhood.

After Danny's funeral, Sipowicz butts heads with an old foe when he's teamed with his nemesis' son John Clark.