We have investigated the F+H-2 reaction on the Stark-Werner potential energy surface using quantum scattering theory, adiabatic theory, and spectral quantization. Clear evidence is found for a transition state resonance on this potential surface. Comparison to experimental results suggests that a resonance is also present in the true reaction. (C) 2000 American Institute of Physics. [S0021-9606(00)01633-0].