affection towards the frog-Mildred, and take her to Ethel, who reluctantly turns her back into a human. Miss Hardbroom comes by and Ethel tells her that she caught Maud, Enid, and Mildred sneaking around the school. Mildred furiously attempts to tell the truth, and the disbelieving Miss Hardbroom is about to give her a punishment, when she notices that Mildred's feet are still invisible. Mildred realises that this proves her story, and tells Miss Hardbroom what happened in the potion lab. Miss Hardbroom tells Mildred and Ethel to report to her office the next day. In the morning, Miss Hardbroom reprimands both Mildred and Ethel for their ongoing feud, and they are both punished with lines – Ethel for turning Mildred into a frog and attempting to lie her way out of trouble, and Mildred for upsetting Ethel's sister. The two girls are also banned from attending the Halloween ceremonies – the only chance Mildred would have had to find a magician who could turn Algernon back into a human. Mildred feels she has no choice but to kidnap somebody who is going to the Halloween festival. She tricks a third-year witch, Griselda Blackwood, into looking under her bed for an imaginary beetle before tying her up and taking her cat. Later, Ethel discovers Griselda being held captive in Mildred's room and the two fly off to the festival to turn Mildred in. When exposed, Mildred takes the plunge and strides up to chief magician Mr Hellibore, handing him the box that contains Algernon. As luck would have it, Mr Hellibore was one of Algernon's fellow magicians at the time of his transformation, and he immediately turns him back to his human form. As a last request from Mildred, Mr Hellibore magics up a pot of tea and a plate of toast, crumpets and butter. Algernon himself then conjures a pot of honey for the crumpets, and the three head off to enjoy the supper. The Worst Witch All at Sea The Worst Witch All at Sea () was published in 1993. It is the only book in the series not set in Miss Cackle's Academy for Witches, but by the sea instead. Plot Mildred Hubble returns to Miss Cackle's Academy for Witches for the Summer Term of her second year. Instead of the usual black-and-grey-checked dresses, Miss Hardbroom persuaded Miss Cackle to change them to plain black. After crash-landing