30. Without a Trace - pt. 2

Sam, Abbie, and Mathilda enter an enormous cave in their bid to find Sam's long-lost parents, but the mysteries seem to grow deeper with every step! And across the forest, as Rob, Rosie, Morton, and Frank meet with Marnie to try and work out what might have happened to Mac, they soon realise there may be more to his disappearance than they first thought!