There has recently been a resurgence of interest in the early nineteenth century Scottish philosopher Mary Shepherd. This Element is intended to provide an overview of Shepherd's system, including her views on the following wide range of topics: causation, induction, knowledge of the external world, matter, life, animal cognition, the relationship between mind and body, the immortality of the soul, the existence of God, miracles, and the nature of divine creation. The author also provides an overview of relevant secondary literature and argues for their own interpretation of Shepherd's metaphysics.

1. Introduction; 2. Causation; 3. The External World and How We Know It; 4. Life and Mind; 5. Shepherd's Defense of Religion and its Implications; 6. Conclusion: Shepherd's 'modified Berkeleian theory.'