The Big High is an episode of the American television series Dragnet. It aired on the NBC network on November 2, 1967, the program's second season. It stars Jack Webb (who also produced and directed the episode) Harry Morgan, Tim Donnelly, Ed Prentiss, Merry Anders, Brenda Scott, Kent McCord and James Oliver. It is sometimes called "Grass Kills" and is considered comparable to Reefer Madness in terms of driving home the point of the dangers of marijuana.