Summer Edgecombe, who first appeared as a prostitute, was a CBI informant recruited by Cho as a confidential informant in season 4. Summer is beautiful, gutsy and manipulative with a child-like sweetness. In the episode At First Blush, Cho admits to having feelings for Summer and a romance develops. This relationship is strained after Summer's reckless behavior nearly gets her killed by a suspect during a sting. After she steals drugs from one of her contacts, a drug dealer, he beats her. Cho seeks out the dealer and beats him. After a heated argument with Cho about her use of drugs, she takes his advice to leave the state and start over, thus ending their relationship.