The Nullifactor is a series of card effects compiled by Stewart James that are based on a single diablolical principle: the Henry J. Christ Force. Although written many years ago it is not very well known among card men. However, we recommend it highly and have some stocks on it at this time. It is a series of card effects based on a single principle, the Henry J. Christ Force Move. Full detail of the move are given and then a whole series of uses, Turn Over Move, Super Move, Spelling Location, Coincidence Upon Coincidence, Ace Assembly, Card and Number Prediction, Nullifactor Slate Mystery, Forcing Two Cards, The Square Deal Location, Miracle Location. The book was put together with the help of Francis Haxton, another well known card mechanic.