Robert Conrad and Ross Martin reprise their roles as Secret Service agents of the 1890s.

Robert Conrad
as Jim West

Ross Martin
as Artemus Gordon

Jonathan Winters
as Prof. Albert Paradine II

Harry Morgan
as Robert T. 'Skinny' Malone

René Auberjonois
as Capt. Sir David Edney

Randi Brough
as Yvonne

Candi Brough
as Daphne

Victor Buono
as Dr. Henry Messenger

Liz Torres
as Juanita

Emma Samms
as Mirabelle Merriwether