Although more mediocre than terrible, this unnecessary installment never should have been made.

Uses a combination of guerilla footage and interviews to create a vivid portrait of what it means to live inside and attempt to escape from North Korea – all without resorting to recreations and/or re-enactments.

Rewards patience not only in the way it crafts its central character but develops the era in which it transpires.

Perhaps not as gloriously, guiltily entertaining as some of the films writer/director Halina Reijn used as models but it offers its own pleasures.

For this much-delayed sequel, director Tim Burton has hewed close to the strengths of the original, repeating them when appropriate and acknowledging them when not.

Although the sensibilities of director Tim Burton are offbeat and his humor verges on the macabre, there is an oddball charm to the proceedings.