Ethel Leatherhead is twelve, and like many people that age, she has acne on her face and has almost no friends except Boydy, the most unpopular boy in the class. Everything seems to be going wrong in her life, but things actually get worse when she receives a real tanning bed as a gift. Because one day, after sunbathing in it, Ethel suddenly becomes invisible! And only at first glance it seems that this is cool, but in reality it is not. In fact, at first it’s scary, and then downright dangerous. But the main thing is to know what exactly not to do when you become invisible! An incredible adventure full of mysteries and disappearances, performed by a real star of children's fiction, Ross Welford! For middle school age.