Speechless is a 2011 play by British playwrights Linda Brogan and Polly Teale. It was based on The Silent Twins by Marjorie Wallace, telling the story of June and Jennifer Gibbons. [1] Its premiere was a national tour of the UK from 20 September to 26 November 2011, in a Shared Experience- Sherman Cymru co-production - venues included the Arcola Theatre in London and the Edinburgh Festival. [2]