1. The slurpy noises you are forced to make when eating a choc ice.
2. Hearing girly giggles coming from the other office -- Ellie and Madie are probably trying to persuade the local radio station to put out a false announcement; or they're making babies out of bubblewrap; or making Sam go red; or they might be planning a joke to play on us.
3. Seeing Katie on a Famous-Five-style mission to find the owners of the murder house so she can make them sell it to her for tuppence. She has been hassling the town planners and the land registry and charming people at the electoral roll into forwarding letters.