In the title compound, C(15)H(16)N(2)O(3)S, the central C-S(=O)(2)N(H)-C unit is twisted, with a C-S-N-C torsion angle of -56.4 (2)°. The benzene rings form a dihedral angle of 49.65 (15)° with each other. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, generating a three-dimensional network.