10 Great Harry Potter Characters That We Never Got To See On Screen

Prisoner Of Azkaban may have been the first film to start deviating quite substantially from its source material, but it wasn't until Goblet Of Fire (636 pages long versus its predecessors 317) that the fat was really trimmed and almost everything not immediately related to the progress of the Triwizard Tournament faced the axe.

Barty Crouch Jr. (played quite deplorably by David Tennant) was still present and shown as being by Voldemort's side from the off, joining him and Wormtail in the opening Riddle House sequence. His sentencing to Azkaban is shown via a Pensieve flashback, but the reasons for his escape and his subsequent overpowering of the Imperius Curse used to keep him pacified by his father were not.

Central to all of this in the book is Bertha Jorkins, an unremarkable member of the Ministry Of Magic workforce whose disappearance abroad prompts frequent speculation. In true 'everything is connected' fashion, it is revealed that her chance visit to the Crouch household was the catalyst for everything, as she deduced the younger Crouch's presence and was then obliviated.

Subsequently encountered by Wormtail and brought to Voldemort, it is from her that he learns of the tournament and concocts his plan to free his loyal follower from his father's clutches and enable him to masquerade as Mad Eye Moody.

The simplification of his return still had considerable impact on screen, but Bertha's absence certainly meant it lacked an element of depth.