The title mol-ecule, C15H12ClNO, features a di-hydro-quinolin-4(1H)-one moiety attached to a chloro-benzene ring. The heterocyclic ring has a half-chair conformation with the methine C atom lying 0.574 (3) Å above the plane of the five remaining atoms (r.m.s. deviation = 0.0240 Å). The dihedral angles between the terminal benzene rings is 77.53 (9)°, indicating a significant twist in the mol-ecule. In the crystal, supra-molecular zigzag chains along the c-axis direction are sustained by N-H⋯O hydrogen bonds. These are connected into double chains by C-H⋯π inter-actions.