The asymmetric unit of the title mol-ecule, C(9)H(10)N(2)O, contains two mol-ecules. The fused benzene and imidazole rings are nearly coplanar, the largest deviations from the mean plane being 0.025 (3) Å at the non-bridgehead imidazole C atom of one mol-ecule and 0.018 (3) Å at one of the bridgehead C atoms in the other mol-ecule. Intermolecular O-H⋯N and N-H⋯O hydrogen bonds result in the formation of a sheet parallel to the (010) plane.