  We investigate the LHC discovery prospects for a heavy Higgs boson decaying
into the Standard Model Higgs boson and additional weak bosons. We consider a
generic model-independent new physics configuration where this decay proceeds
via a cascade involving other intermediate scalar bosons and focus on an LHC
final-state signature comprised either of four b-jets and two charged leptons
or of four charged leptons and two b-jets. We design two analyses of the
corresponding signals, and demonstrate that a 5{\sigma} discovery at the 14 TeV
LHC is possible for various combinations of the parent and daughter Higgs-boson
masses. We moreover find that the Standard Model backgrounds can be
sufficiently rejected to guarantee the reconstrution of the parent Higgs boson
mass. We apply our analyses to the Type-II Two-Higgs-Doublet Model and identify
the regions of the parameter space to which the LHC is sensitive.
