This is the third book in the Jill series by Jemma Spark .
Then there are people after them and they need to disguise themselves before they dash to Dartmoor..
But she has this happy knack of falling into adventure and along the way she gets mixed up with an extremely handsome but mysterious young man.
Jill Crewe is planning to go Pony Trekking with the Merrivales, reliving some of the idyllic moments of her youth.
This is the third book in the Jill series by Jemma Spark