  In this talk I will discuss the extraction of the CKM angle $\gamma$ at
B-factories through the interference of the subprocesses $B^-\to K^- D^0$ and
$B^- \to K^-\bar D^0$. This seemingly impossible interference may be
accomplished by allowing both $D^0$ and $\bar D^0$ to decay to a common final
state. If only CP eigenstate decay modes of the $D$ are considered, the
branching ratio for $B^- \to \bar D^0 K^-$ must be experimentally I describe
why this determination is likely to be experimentally impossible. On the other
hand, if more general $D$ decays are considered, the angle $\gamma$ may then be
determined. In fact, it is possible that a reasonable determination of $\gamma$
may be made with O(10^8) B's.
