  We introduce the contributions to the proceedings of Working Group V. The
main topics were: present and future experiments dedicated to charm physics,
the interplay between high-precision measurements and better control over
theoretical uncertainties, and searches for signals of new physics in the charm
sector. The comparison of Lattice QCD calculations with precise measurements of
charm semi-leptonic and leptonic decays can have a major impact on the
determination of CKM matrix elements from measurements of B meson decays.
