Peter Pan in Scarlet is a novel by Geraldine McCaughrean. It is marketed as the "official sequel" to J. M. Barrie's Peter and Wendy (1911), authorised by Great Ormond Street Hospital, to whom Barrie granted all rights to the character and original writings in 1929. McCaughrean was selected following a competition launched in 2004, in which novelists were invited to submit a sample chapter and plot outline. The book continues the story of the Lost Boys, the Darling family, and Peter Pan, in 1926 during the reign of George V and following World War I.