Professor Hargraves is Pauline's father, a noted doctor of chemistry and archeology who leads the expedition seeking the ivory disk and its ancient formula. Bashan repeatedly targets him and the discoveries he makes. In New York, he writes down the complete formula and later works to recreate it, while Warde and Thompson help defend the group from Bashan's attacks.
Carl is a fellow scientist whom Stanley meets while developing the Vanishing Ray. He helps Stanley build a prototype of the wearable device, which makes its user invisible while leaving the user's shadow visible. The plot identifies him as a scientific collaborator in Stanley's invention, but gives no further role for him in the conflict over the bonds or in the final events.
The prison official who offers Jim a privileged trustee position and promises clemency in exchange for information about Pete's robbery accomplices and hidden loot, indirectly triggering Jim's escape plot.
James Durkin has 32 screen credits in a career dating back to 1913. Signature works include House of Mystery, Perils of Pauline, The Vanishing Shadow. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
