In the title mol-ecule, C(17)H(10)BrNO(3), the mean planes of tricycle and bromo-phenyl fragments form a dihedral angle of 75.5 (1)°. In the crystal, π-π inter-actions [centroid-centroid distances = 3.556 (2) and 3.898 (8) Å] between the isoquinoline systems link mol-ecules into stacks parallel to the a axis. The crystal packing also exibits weak inter-molecular C-H⋯O hydrogen bonds.