Alastair Chisholm is the author of the sci-fi middle-grade adventures, Orion Lost , shortlisted for the Waterstones Children's Book Prize, and Adam-2 , which won the Blackwell's Children's Book of the Year. Alastair's debut picture book, The Prince and the Witch and the Thief and the Bears , was shortlisted for Scottish Book Trust's Bookbug Prize, and Inch and Grub won Scottish Book Trust's Bookbug Prize and The Queen's Knickers Award. Alastair has also written several puzzle books for children and adults, including Kids' Book of Sudoku and Kids' Book of Kakuro .