Join Dame Helen Mirren for a historic night in history of Hogwarts as this epic TV event series culminates in the Grand Final. Tonight's final edition is full of Wizarding World trivia, packed with magical special guests and overflowing with classic clips. It all comes down to this, one team, one house will tonight lift the inaugural Hogwarts Tournament of Houses trophy.

Dame Helen Mirren returns to the Wizarding World to oversee this head to head wildcard match up. The two houses that lost their previous battles in this distinguished TV event series now have one last chance to take their place in the grand final. There will be special celebrity guests, actors from the original films and more Harry Potter trivia than you could squeeze into a cupboard under the stairs. Tonight's episode is another magical Harry Potter chapter of Drama, courage and redemption.

Tonight's blockbuster battle of the Hogwarts houses sees the wise and witty Ravenclaws go up against the proud and Ambitious Slytherins in a test of wizarding world knowledge. Only one team can claim an automatic place in the Grand Final. As always tonight's match up will take place under the watchful eye of the master of ceremonies Dame Helen Mirren. With Guest appearances and classic Potter movie moments this is another historic night in Hogwarts history.

Dame Helen Mirren hosts the first episode of this epic TV event series. Over 4 episodes the Houses of Hogwarts will do battle to see which team knows the most about the wizarding world. Tonight's match up - Gryffindors face the Hufflepuffs.