  Implications of inserting a conformal, monodromy line defect in three
dimensional O($N$) models are studied. We consider then the WF O($N$) model,
and study the two-point Green's function for bulk-local fields found from both
the bulk-defect expansion and Feynman diagrams. This yields the anomalous
dimensions for bulk- and defect-local primaries as well as one of the OPE
coefficients as $\epsilon$-expansions to the first loop order. As a check on
our results, we study the $(\phi^k)^2{\phi}^j$ operator both using the
bulk-defect expansion as well as the equations of motion.
