LSD, mescaline, psilocybin mushrooms and PCP belong to a group of illegal drugs commonly known as "Hallucinogens". Hallucinogens are dangerous and unpredictable drugs. A single use may send a user into a "bad trip" that could leave him terrified, haunted, or even injured. Teen narrators expose the truth about hallucinogens, including their short- and long-term effects, and the severe consequences these drugs may have on a person's mental state.

Hallucinogen Persisting Perception Disorder, an ongoing, permanent condition, causes sufferers to have visual and emotional disturbances for life.

Included in "In the Know: Hallucinogens" is a close look at the drug, phencyclidine, or PCP. PCP is an extremely hazardous, which was created as a surgical anesthetic. It produces psychosis in many users. They lose touch with reality, often believe they are indestructible, and lose all consciousness of pain, making them highly dangerous to themselves and others. PCP is often smoked. "In the Know: Hallucinogens" gives PCP's story to viewers to young to remember the horror stories from PCP's ancient 1960s and 70s history.

Directs readers to Fox Pro Media's In the Know Zone Web site for in-depth information on the subject.