Season 2, Episode 9
A streetwise hustler is pulled into a compelling conspiracy after witnessing the suicide of a girl who looks just like her.
Season 2, Episode 10 -"By Means Which Have Never Yet Been Tried"
Season 2 ends with Sarah being forced to concede when Rachel launches her latest ploy. However, the Clone Club springs into action to save her. Later, Sarah meets a new ally and uncovers a terrifying new dimension to the conspiracy.
Season 3, Episode 2 -"Transitory Sacrifices of Crisis"
Castor pursues the Leda clones for original tissue samples. Helena, who is pregnant and imprisoned, is examined by a mysterious new villain. The Castor boys are also out to play, toying with a frightened young woman, Patty, in a sexy switcheroo that ultimately sets Sarah - and Art - hot on the Castor trail. But it's not all fun and games for the Castor boys, as Sarah gleans they may have a mysterious defect that puts their lives in peril.