Who keeps making such a mess in Sammy's bedroom? Follow Sammy as she tries to solve the mystery in this high-level phonics book. Part of Reading Stars Phonics - our structured programme of fully decodable phonics readers to support the teaching of phonics using the UK Government's Letters and Sounds programme - A Messy Mystery is a Phase 5 book. It introduces some alternative spellings for phonemes: /i/ (happy), /ar/ (father), /air/ (there, pear), /or/ (all, four, caught), /ur/ (learn, work), and the common exception words their, looked, water, where, again, thought, any, friends, once.