Season 1

01 Episode 1 Episode 122nd June 2023 In the first episode of the series, contestants from London, Worcester, Barry, Derby and West Kilbride take on five rounds of fiendish puzzles. 02 Episode 2 Episode 229th June 2023 Brand-new quiz show presented by Lucy Worsley. Contestants from Guildford, Bristol, Somerset, Ormskirk, London and Dingwall take on five rounds of fiendish puzzles. 03 Episode 3 Episode 36th July 2023 Lucy Worsley presents the new quiz show. Contestants from Derby, Gloucestershire, Croydon, Swadlincote, South Wales and Warwick take on five rounds of fiendish puzzles. 04 Episode 4 Episode 413th July 2023 Lucy Worsley presents the new quiz show. Contestants from Rochdale, Wirral, Bath, Dumferline, Edinburgh and Liverpool take on five rounds of fiendish puzzles. 05 Episode 5 Episode 520th July 2023 Six contestants from Worcester, London, Rotherham and Kent take on five rounds of fiendish puzzles testing language skills, calculation, lateral thinking, visual intelligence and memory. 06 Episode 6 Episode 627th July 2023 Contestants from Portsmouth, Essex, Manchester, London and Derbyshire take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final. 07 Episode 7 Episode 73rd August 2023 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. 08 Episode 8 Episode 810th August 2023 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. 09 Episode 9 Episode 917th August 2023 Contestants from Bristol, London, Bromborough, Aberdeen, Fordingbridge and Croydon take on five rounds of fiendish puzzles as they attempt to qualify for the series Grand Final. 10 Episode 10 Episode 1024th August 2023 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. 11 Episode 11 Episode 1131st August 2023 In the final round before the semi-final, Lucy Worsley puts players from Leeds, Pontypool, Norfolk, Belfast, Derbyshire and London through their paces in five demanding rounds of puzzles. 12 The Play-Off Episode 127th September 2023 Six contestants from around the UK have made it to the play-off to take on five rounds of fiendish puzzles as they attempt to qualify for the Grand Final. 13 The Final Episode 1314th September 2023 It's the Grand Final and our contestants take on five rounds of fiendish puzzles as they attempt to become the Ultimate Puzzler.