Elementary My Dear Viewer

Richard E. Grant Self - Presenter

Gyles Brandreth Self

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

Jill Cummings Self(as Jill Cumming)

Jeffery Deaver Self

Owen Dudley Edwards Self(as Dr Owen Dudley Edwards)

Christopher Frayling Self(as Sir Christopher Frayling)

Johnny Hackett Self

Edward Hardwicke Self

Robert Hardy Self

P.D. James Self

Val McDermid Self

Kim Newman Self

Nick Rennison Self

Antony Richards Self(as Dr Anthony Richards)

Matthew Sweet Self

Barbara Young Self

Denise Black Denise Black