As a psychological thriller this actually works. In large part because of Michael Caine. As a B movie about a killer hand or a schizo cartoonist it features Olive Stone's tortured man, driven to ruin by a woman, whose lack of self-knowledge and unchecked rage propel him to violence. I kind of agree with another reviewer's disappointment at the ending not wrapping it up, but The Hand is enough of a thing that I feel neither way about the end. Stone's vitriol for women, a characterization many have stuck on throughout his career, is very apparent here. Caine as Johnathan Lansdale is comfortable in his beautiful country home, crafting a semi-popular syndicated cartoon. But his yogic wife Anne (Andrea Marcovicci) wants to do something with her life and demands a move to NYC. This ends up undoing him, but not before he struggles with having his writing/drawing hand severed. Without saying more, I'd recommend this for Caine's gradual unraveling, an engrossing trip into The Mind and even a good Oliver Stone cameo.
