LOS ANGELES—The producers of long-running family drama 7th Heaven have announced its 100th landmark episode dealing with underage drinking. "We're proud that we're starting our first season on the new CW network with a storyline we've virtually perfected: the gravely serious problem of kids getting their hands on alcohol," Executive Producer and series creator Brenda Hampton said. "This time around, the Camdens learn a valuable lesson in forgiveness when Sam and David, the 7-year-old twins, are caught drinking Aqua Net straight from the spray-can cap." The episode will be immediately followed by a rebroadcast of the series' 100th episode concerning premarital sex.