A Dirty Bertie collection to delight everyone who revels in his revolting ways! Enjoy the comic capers of Dirty Bertie ? the world?s grubbiest trouble magnet ? in this bumper book of nine revolting stories from TROUBLE!, WORMS! and FETCH! DIRTY BERTIE is a hugely popular series featuring the character created by David Roberts and written by Alan MacDonald. With each hilarious story split into bitesize chapters, DIRTY BERTIE is ideal for building reading confidence. It is very hilarious story.