The asymmetric unit of the title compound, C18H20N2S4, contains one half-molecule, the complete molecule being generated by a twofold rotation axis. The plane through the NCS2 group [maximum deviation = 0.01 (7) Å] is orthogonal to the phenyl ring, forming a dihedral angle of 89.4 (3)°. The crystal structure is stabilized by intermolecular C—H⋯π interactions.