  The dynamics of higher-spin fields in braneworlds is discussed. In
particular, we study fermionic and bosonic higher-spin fields in AdS_5 and
their localization on branes. We find that four-dimensional zero modes exist
only for spin-one fields, if there are no couplings to the boundaries. If
boundary couplings are allowed, as in the case of the bulk graviton, all bosons
acquire a zero mode irrespective of their spin. We show that there are boundary
conditions for fermions, which generate chiral zero modes in the
four-dimensional spectrum. We also propose a gauge invariant on-shell action
with cubic interactions by adding non-minimal couplings, which depend on the
Weyl tensor. In addition, consistent couplings between higher-spin fields and
matter on the brane are presented. Finally, in the AdS/CFT correspondence,
where bulk 5D theories on AdS are related to 4D CFTs, we explicitly discuss the
holographic picture of higher-spin theories in AdS_5 with and without
boundaries.
