even been mentioned since. Mrs. Trotteville – She is Fatty's mother and Fatty simply adores her. She is very lenient with him. Unlike the Hiltons she does not take Mr. Goon seriously and even considers him a nuisance. It is made out in the books that she enjoys going out with her husband for bridge parties. Though she does not like the children falling into adventure as she considers it dangerous, she does not interfere much and gives Fatty a lot of freedom and trust. The Postman – Appeared in several stories. The five always get some help from him. Liz and Glad – (Elizabeth Woosh and Gladys Woosh). Ern Goon's cousins who appear in The Mystery Of Tally-Ho Cottage. They helped Ern spy on the Larkins. Bingo – (Ern's dog). Ern Goon's new dog Bingo makes an appearance in the last book, The Mystery of the Banshee Towers. Bingo is described as having a huge tail that "waves instead of wag" but small legs to match it. Like Fatty and Buster, Ern and Bingo simply adore each other a lot. Timeline At the beginning of the series Larry is 13; Fatty, Pip, and Daisy are 12; while Bets is 8. Bets goes to day school, whereas all the others go to boarding school, which Bets really does not like because the others are friends at school and she only sees them at the holidays. The series takes place in successive school holidays, beginning with the Easter holidays and cycling through the summer and Christmas holidays. During each holiday the children solve a mystery – until The Mystery of the Invisible Thief (summer holidays), after which there is a break until the next summer holidays in which they solve "The Mystery of the Vanished Prince" At the end of the series, Bets is 13; Fatty, Daisy, and Pip are 17; and Larry is 18 Novels The 15 books in the series are: The Mystery of the Burnt Cottage (1943) The Mystery of the Disappearing Cat (1944) The Mystery of the Secret Room (1945) The Mystery of the Spiteful Letters (1946) The Mystery of the Missing Necklace (1947) The Mystery of the Hidden House (1948) The Mystery of the Pantomime Cat (1949) The Mystery of the Invisible Thief (1950) The Mystery of the Vanished Prince (1951) The Mystery of the Strange Bundle (1952) The Mystery of Holly Lane (1953) The Mystery