Episode 52 of "7th Heaven"
s03e08 No Sex, Some Drugs and a Little Rock 'n' Roll

Eric's old Rock & Roll band has come to town for a small concert, although he is suspicious about their possible drug habit. The band is staying at the Camden home--- they have parked their trailer on the front lawn. Meanwhile, Simon starts to drink coffee and becomes very addicted. Lucy continues to be on the phone constantly talking to her boyfriend Jordan while Ruthie is constantly chewing gum. Also, Mary finds out that one of her friends from the basketball team, Diane, is taking natural pills to boost her energy and that everyone else on the team is taking them. Mary then decides to take a few pills herself when overhearing Matt in a conversation about his bottle of natural pills. Eric then yells at Matt when finding pills in his room. Matt says that he got it from a friend, but he didn't take any yet. Mary then tells her father that she got the same pills from her friend Diane. When Eric tries to talk to Diane and her father, they do not listen to him. Later that evening, while Eric and Annie are jamming at the bands concert, Diane has a sudden heart attack when playing basketball with Mary at the playground.