  In this Report we discuss the four complementary searches for the identity of
dark matter: direct detection experiments that look for dark matter interacting
in the lab, indirect detection experiments that connect lab signals to dark
matter in our own and other galaxies, collider experiments that elucidate the
particle properties of dark matter, and astrophysical probes sensitive to
non-gravitational interactions of dark matter. The complementarity among the
different dark matter searches is discussed qualitatively and illustrated
quantitatively in several theoretical scenarios. Our primary conclusion is that
the diversity of possible dark matter candidates requires a balanced program
based on all four of those approaches.
