LOS ANGELES (AP) - We know how Cory Monteith (mahn-TEETH') died -- but not Finn. Last night's "Glee" was a tribute to the late star, who died in July from an overdose of heroin and alcohol. The show does not mention what killed Finn. The story picks up some weeks after the funeral, showing the impact of Finn's death on his friends. Kurt says, "Everyone wants to talk about how he died, but who cares?" Sue Sylvester tells the glee club members not to make a "self-serving spectacle" of their sadness. Monteith's real-life girlfriend Lea Michele makes her first appearance late in the episode. As a sobbing Rachel, she says "I loved Finn." Then she sings "Make You Feel My Love." After the show, cast members appeared in a Public Service Announcement encouraging people with drug problems to get treatment.