Lieber played mathematician John Edensor Littlewood, starring alongside Kevin McGowan, Cloudia Swann, and Richard Walsh.

When Lieber was aged 13 in 2001, he appeared in a musical adaptation of the Charles Dickens classic Oliver Twist at the Garrick Theatre, he played one of Fagin's boys.

When confronted in private, the guest explains he has been hired to murder him but allows the man to enjoy his party provided he agrees to meet him at the end of the evening.

[8]Lieber has identified that the novel is an allegorical story with hidden levels of meaning for readers who want to dig deeper into the narrative.

Two important allegories Lieber drew inspiration from while writing The War Hero were William Golding's Lord of the Flies and George Orwell's Animal Farm.