Follow the mystery-busting adventures of 7-year-old Stan and his 71-year-old Gran, as together they investigate the mysterious goings-on in the fictional coastal town of Porthole.
Stan finds a tiny human handprint - have Grandad's missing gnomes really come to life?!
Melanie won't go to her favourite beach because of a strange sound.
Grumblestunk's new speed camera catches Stan breaking the speed limit on his scooter.
Stan and Gran get the giggles while spotting nature on a lake.
Beach shoes have gone missing, some red hair is found at the scene and Grumblestunk is blaming Stan.
The due must quickly discover where a load of worms came from or Ellie's new clothes-drying service will be ruined.
Grumblestunk is getting competitive during 'Porthole In Bloom', but so are the local robins! Why are the red-chested birds turning on each other?
Stan finds a treasure map in a bottle on the beach. Could it really lead to finding the lost treasure of dread pirate Abby Birdy?
