A letter from Jamy's younger sister, Marta, prompts her to ask Heidi if the young girl can stay with them.

As the strawberries blossom, Heidi gives birth to not just one child, but twins - a boy and girl that are named Tobias and Marta, at the grandfather's suggestion.

The Uncle misses Marta and when Heidi tells him she has gone strawberry picking, he looks forward to the taste of the sweet berries.

This is the item that was in the package left by the Uncle and it is engraved with the letter TH - MK - Tobias Halm and Marta Kruse.

He was an Austrian who met and married Jamy and Marta's grandmother, but she was used to fine things and a rich lifestyle that he could not maintain.

He did everything he could to make his wife happy, but she left him and went home to her parents, taking their baby son - Jamy and Marta's father - with her.

Jamy goes with her parents to Vaud where she marries Max, a local geologist she met through them, but Marta is still not happy, as she constantly fears that the hand will reach down once more and snatch away those she loves.

After hours of searching the mountainside, she takes refuge under Rainy Day Rock where she finds Martali asleep.

In trying to calm her, Marta has a realisation of how difficult she must have been for her mother to deal with, and it leads her to decide to go and stay with her parents for the summer.