 Despite the initial appearance of simplicity in its assumptions, structure and argumentation, we have turned up several important problems and lacunae that stand in the way of any overall final assessment of the plausibility of Anomalous Monism. While the central objections it has faced have derived from epiphenomenalist concerns, the force of these objections is not clear. Arguably, the most serious difficulties for Anomalous Monism are not with its adequacy but with its justification. We still stand in need of a clear argument for how rationality leads to the anomalism principle; there are the substantial problems surrounding the status of the causal closure of the physical and its bearing on monism; and the cause-law principle’s strictness requirement is still in need of a compelling rationale. Even with these problems, Anomalous Monism continues to provide an extremely useful framework for exploring fundamental issues and problems in the philosophy of mind, and has earned a central place on the rather short list of important positions on the relation between mental and physical events and properties.