Richard E. Grant

as Self - Presenter

Gyles Brandreth

as Self

Arthur Conan Doyle

as Self(archive footage)(as Sir Arthur Conan Doyle)

Jill Cummings

as Self(as Jill Cumming)

Jeffery Deaver

as Self

Owen Dudley Edwards

as Self(as Dr Owen Dudley Edwards)

Christopher Frayling

as Self(as Sir Christopher Frayling)