Arthur is pushed to the limit when he tries to win Morven's affections.
Zosia is offered a prestigious research internship in Edinburgh, but how does Ollie feel about this?
Hanssen sends Dom, Morven and Arthur to an outdoor pursuit centre to battle for a research grant, but the competition gets a whole lot harder when it becomes clear that Morven's father is involved. Does Arthur have what it takes to prove himself?
Zosia is torn when Jac offers her a research internship in Edinburgh. Can Ollie finally be honest about his feelings for her and can he make her stay?
Aired: 5 Jan 2016