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Written and illustrated by Joanna Harrison.

Published by Harper Collins

When cousins call to say they're coming over that afternoon, Mom rushes to get ready for their visit. The house is a mess, and there's nothing to eat. That means cleaning, scrubbing, vacuuming, and shopping. She asks Sam and his sister to help her out, but they just don't. Instead, they bicker and whine and create even more of a mess. But suddenly they realise that something very strange is happening to Mom...

To be republished by Harper Collins in Summer 2019


  • A marvelous book, highly recommended - Mumsnet 

  • Brilliant. It's not often I find a book that my four year old and my not-quite-two year old both enjoy, but this one fits the bill, and I love reading it to them as well. It's funny, there's lots to relate to (especially for me), and it's well written and beautifully illustrated. Lots of details keep the older one happy: eg the fact that no one remembers to feed the cat until you close the back cover! If only all children's books were this good. 

  • My kids absolutely love this and I must admit I find it fun too. It is all about how the stresses of the day slowly turn mum into a 'monster' and it's great at getting both parents and children see how their behaviour can affect each other resulting in them turning into something they otherwise wouldn't be. It's fun with an underlying message for all to understand - tongue in cheek stuff but with a happy ending.

  • Amazon 5 stars

  • As a mother of four children I've read lots of children's books and this is my favourite. The children all love it and I find it very therapeutic to read - I love the pictures of the messy house and empathise completely with the mother! My little ones half hope that I will start to grow a tail if they are naughty! A really fantastic book.

  • This book gives stressed families of young children chance to sit quietly and reflect on the escalating bad tempers. It is humorous and accessible to children of about 4 years and up. They can identify with what the children are doing. The effects on their fictional mother are brilliantly illustrated by her gradual transformation into a wild, green monster. It engenders empathy for each other and helps give the children a sense of responsibility for the impact of their behaviour on others!

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