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A dying man's enigmatic last words send vicar's son, Bobby Jones, and his socialite friend, Lady Frankie Derwent, on a crime-solving adventure.
Along the rugged Welsh coastline, Bobby Jones finds a dying man at the bottom of the cliffs. As Bobby tries to ease his final moments, the dying man utters a mysterious question.
Following a shocking death thought to be suicide, Bobby and Frankie are convinced it was murder. Together, they hatch a plan to infiltrate Frankie into the home of their prime suspect.
As Frankie and Bobby dig deeper, they begin to uncover a dark conspiracy. Will they finally find the meaning behind that fateful question?
Will Poulter
Bobby Jones
Lucy Boynton
Frankie Derwent
Maeve Dermody
Moira Nicholson
Conleth Hill
Dr Alwyn Thomas
Daniel Ings
Roger Bassington-ffrench
Jonathan Jules
Ralph 'Knocker' Beadon
Alistair Petrie
Rev Richard Jones
Nicholas Asbury
Mr. Angel
Morwenna Banks
Amelia Cayman
Miles Jupp
Henry Bassington-ffrench
Amy Nuttall
Sylvia Bassington-ffrench
Paul Whitehouse
Askew