Henry VI, Part 1
From Tardis Wiki, the free Doctor Who reference
Henry VI, Part 1 was a play by William Shakespeare featuring the eponymous King of England.
Peri Brown, Susan and Judith saw a performance of the play in 1597. When speaking about its sequel Henry VI, Part 2, Peri said "it wasn't as good as the first one" because "it didn't have many of the original actors in it, for one". (AUDIO: The Kingmaker)
