Wolfblood - Season 2 Episode 10 -

On an orienteering trip with the school Liam finds that the group is close to the field where his ancestor killed a wolfblood - or werewolf as he believes. Maddy discovers the ancestor's diary and learns where the wolf's lair is and so she and Rhydian join Liam's group in an effort to stop him finding it. In fact they discover it but Liam falls into the pit and Maddy has to momentarily turn into a wolf in order to climb through a passage to free him before Rhydian summons help. However nobody believes Liam when he claims to have seen a werewolf.