Heroin is a drug synthesised from morphine, which is derived from opium poppies. The drug is usually injected into the user's arm for the best effect. In the United Kingdom, it is a Class A drug.
Use in Life on Mars[]
By 1973, heroin was a relatively new drug found on the streets of Manchester. DCI Hunt was dedicated from stopping it from spreading further. (LOM Series 2: Episode 6)