free verse translations from Ovid's Metamorphoses. He also wrote both poetry and prose for children, one of his most successful books being The Iron Man, written to comfort his children after their mother Sylvia Plath's suicide. It later became the basis of Pete Townshend's 1989 rock opera of the same name, and of the 1999 animated film The Iron Giant, the latter of which is dedicated to his memory. Hughes was appointed Poet Laureate in 1984 following the death of John Betjeman. It was later known that Hughes was second choice for the appointment. Philip Larkin, the preferred nominee, had declined, because of ill health and a loss of creative momentum, dying a year later. Hughes served in this position until his death in 1998. In 1992 Hughes published Shakespeare and the Goddess of Complete Being, a monumental work inspired by Graves's The White Goddess. The book, considered Hughes's key work of prose, had a mixed reception "divided between those who considered it an important and original appreciation of Shakespeare’s complete works, whilst others dismissed it as a lengthy and idiosyncratic appreciation of Shakespeare refracted by Hughes’s personal belief system". Hughes himself later suggested that the time spent writing prose was directly responsible for a decline in his health. Also in 1992, Hughes published Rain Charm for the Duchy, collecting together for the first time his Laureate works, including poems celebrating important royal occasions. The book also contained a section of notes throwing light on the context and genesis of each poem. In 1998, his Tales from Ovid won the Whitbread Book of the Year Award. In Birthday Letters, his last collection, Hughes broke his silence on Plath, detailing aspects of their life together and his own behaviour at the time. The book, the cover artwork for which was by their daughter Frieda, won the 1999 Whitbread Prize for poetry. Hughes's definitive 1,333-page Collected Poems (Faber & Faber) appeared (posthumously) in 2003. A poem discovered in October 2010, "Last letter", describes what happened during the three days leading up to Plath's suicide. It was published in New Statesman on National Poetry Day, October 2010. Poet Laureate Carol Ann Duffy told Channel 4 News that the poem was "the darkest poem he has ever written" and said that for her it was "almost unbearable to read". In 2011, several previously unpublished letters from Hughes to Craig Raine were published in the