Tuppence Middleton as Iris Carr

Tom Hughes as Max Hare

Keeley Hawes as Mrs Todhunter

Julian Rhind-Tutt as Mr Todhunter

Alex Jennings as The Professor

Stephanie Cole as Evelyn Floodporter

Gemma Jones as Rose Floodporter

Selina Cadell as Miss Froy

Jesper Christensen as The Doctor

Daisy Lewis as Diana

Benedikte Hansen as The Baroness

Beatrix Biro as Nurse

Marta Bolfan as Blonde Woman

Vilmos Cservenák as Ticket Master

Zsuzsa David as Frau Kummer

Emerald Fennell as Odette

Balázs Galkó as Station Porter

Tamás Lengyel as Julij

Katharine Bubbear as English Friend (uncredited)

Lysander Barron as English Friend (uncredited)

Jack Fayter as English Friend (uncredited)