Within These Walls is a British television drama programme created and written by David Butler. Produced by London Weekend Television for ITV, broadcast between 1974 and 1978, the series portrays life in HMP Stone Park, a fictional women's prison.

Unlike the later women-in-prison series Prisoner and Bad Girls, Within These Walls tended to centre its storylines around the staff rather than the inmates. Plots typically revolve around well-groomed, genteel governor Faye Boswell's attempts to liberalise the regime while managing her private life.

Spirited dialogue, posh Roaring '20s style, and devious mysteries abound as Tommy and Tuppence Beresford mix marriage and mystery solving.

Childhood friends Tommy and Tuppence meet in London after having served in World War I. Recently "demobed", short of money, and with no job prospects, they decide to become adventurers for hire. Soon, they are employed by the British Government to locate a secret treaty signed before the war.