This text offers a comprehensive introduction to traditional and contemporary issues in epistemology and a balanced treatment of the principal positions in the field. Crumley provides a straightforward introduction to complex topics, then gradually develops their major lines of argument in a patient, thorough manner that students will find accessible.
Crumley's "An Introduction to Epistemology" is just that: an introduction. Hence, its merits (conciseness, comprehensibility) relate directly to its flaws (superficiality, over-simplification). Works best when paired with more in-depth readings.