Saffron Burrows
— Fiona
James Cosmo
— Francis Crowley
Emily Flain
— Lily
Art Parkinson
— Sean
Jonathan Forbes
— Jonathan Horner
Michael Shea
— Conor
Sean Kearns
— University Dean
Nigel O'Neill
— Treasurer
Antonia Campbell-Hughes
— Ancient Morrigan
Desmond Eastwood
— Rescuer
Toby Stephens
— Malachy Crowley
Celina Chien
— Chloe
Steven Cooke
— Rescue Pilot