David Giuntoli Profile: Meet actor David Giuntoli who plays homicide Detective Nick Burkhardt. He explains how his character discovers he is descended from an elite line of criminal profiler... Read allDavid Giuntoli Profile: Meet actor David Giuntoli who plays homicide Detective Nick Burkhardt. He explains how his character discovers he is descended from an elite line of criminal profilers known as "Grimms".David Giuntoli Profile: Meet actor David Giuntoli who plays homicide Detective Nick Burkhardt. He explains how his character discovers he is descended from an elite line of criminal profilers known as "Grimms".