It's the Grand Final and our contestants take on five rounds of fiendish puzzles as they attempt to become the Ultimate Puzzler.

After 13 weeks of challenges, who will become the historic winner of this first run of Puzzling with Lucy Worsley?

Six contestants from around the UK have made it to the play-off and will take on five rounds of fiendish puzzles as they attempt to qualify for the series' grand final. Lucy Worsley asks the questions.

Contestants from Leeds, Pontypool, Norfolk, Belfast, Derbyshire & London take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final.

Contestants from Thetford, Oxford, Powys, Staffordshire, Nottingham and Porth take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final.

In this edition, contestants from Bristol, London, Bromborough, Aberdeen, Fordingbridge and Croydon take on the five rounds of fiendish puzzles.

Contestants from Edinburgh, Coulsdon, Poole, Tenbury Wells, London and Sheffield take on five rounds of fiendish puzzles in a bid to qualify for the series Grand Final.

Contestants from Birmingham, Blackburn, London, Manchester and Croydon take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final. Only the winning team play the last round, Divide and Conquer. And in a twist, team mates turn against each other as only one player can win the episode.

Contestants from Portsmouth, Essex, Manchester, London & Derbyshire take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final. Lucy Worsley asks the questions.

Contestants from Worcester, London, Rotherham, Rochester and Kent take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final.

Contestants from Rochdale, Wirral, Bath, Dumferline, Edinburgh and Liverpool take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final.

In the third edition, contestants from Derby, Gloucestershire, Croydon, Swadlincote, South Wales and Warwick take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final.

Contestants from Guildford, Bristol, Somerset, Ormskirk, London and Dingwall take on five rounds of fiendish puzzles. They are split into two teams of three and try to accrue the most points through their powers of puzzling deduction. Then the members of the winning team turn on each other to be named the best of the best and earn a place in the series final where the ultimate puzzler will be crowned. 

In the first episode of the series, contestants from London, Worcester, Barry, Derby and West Kilbride take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final.