  The presence of a new singlet scalar particle a can open up new decay
channels for the Higgs boson, through cascades of the form h -> 2a -> X,
possibly making discovery through standard model channels impossible. If a is
CP-odd, its decay products are particularly sensitive to physics beyond the
standard model. Quantum effects from heavy fields can naturally make gluonic
decay, a -> 2g, the dominant decay mode, resulting in a h -> 4 g decay which is
difficult to observe at hadron colliders, and is allowed by LEP for m_h > 82
GeV. However, there are usually associated decays with photons, either h -> 2g
2gamma or h -> 4gamma, which are more promising. The decay h -> 2g 2gamma only
allows discovery of the a particle and not the Higgs whereas h -> 4gamma is a
clean channel that can discover both particles. We determine what branching
ratios are required for discovery at LHC and find that with 300 fb^-1 of
luminosity, a branching ratio of order 10^-4 is sufficient for a large region
of Higgs masses. Due to a lower expected luminosity of ~ 8 fb^-1, discovery at
the Tevatron requires more than 5 x 10^-3 in branching ratio.
