The writers of Trinity (ITV2) have got bare-faced cheek - and that's not a reference to leading lad Christian Cooke's penchant for wearing his boxers at half mast. What's obvious is that this toffs v peasants black comedy thriller pays a huge debt to Society, Brian Yuzna's 1989 horror classic where the rich literally feed on the poor. Society (the movie, the concept) is all about fitting in and that's the motor driving Trinity, a bizarrely enjoyable hybrid of Gossip Girl and Brideshead Revisited - with a dash of Dr Phibes - that's set in an imposing university where the elite have ruled the roost for centuries. Though they let the odd working-class oik in for a spot of amusement.

It's not the subtlest satire you'll ever see but, what with Charles Dance doing something murky in the lab, dark secrets swirling round the quadrangle and a young, lusty cast bouncing from mystery thriller scenes to parodies of American Pie at the drop of a pair of knickers, there's never a dull moment. My guess is that the incidental pleasures are likely to outweigh any burning interest in discovering the truth behind the shadow hanging over drippy heroine Charlotte's past but, with potty-mouthed posh totty Isabella Calthorpe having a ball rolling her tongue around the filthiest lines in the script, Trinity is shaping up as an unholy treat.