Thiophosgene, Cl2CS, has been excited with ps laser pulses in bulbs and a continuous supersonic expansion to nominal single vibronic levels in the B((1)A(1)) state, and its emission spectra. temporal fluorescence decay profiles and quenching constants measured. Bound bright vibronic A states decay exponentially by primarily radiative means. Further evidence is found of non-radiative passage of a subset of bright B states to a dark portion of the B state hypersurface.