Herbert Higgins was a neighbor of the Herrick family. On a stroll home from the local pub he came upon Robert Griffin, who, disoriented from being drugged by Sir Jasper and Lady Herrick, had fallen into the river. After rescuing Robert and taking him to his home, Herbert learned of how the Herricks had "cheated" him out of a fortune in diamonds. Herbert agreed to help Robert get his share, and hired a lawyer for him, Jim Feeney. However Feeney proved to be quite incompetent. Robert then parted ways with Herbert, but returned to his friend after having been made invisible by Dr. Drury. As thanks for trying to help him, the invisible Robert helped Herbert win a lot of money playing darts at his favorite pub.