In the title compound, C(19)H(13)N(3)O, the dihedral angle between the two quinoline systems is 11.54 (3)°. The mol-ecular conformation is stabilized by intra-molecular N-H⋯N and C-H⋯O hydrogen bonds, with N-H⋯N being bifurcated towards the two N atoms of the two quinoline rings. In the crystal, there are weak intermolecular π-π inter-actions present involving the quinoline rings [centroid-centroid distance 3.7351 (14) Å].