The main-release music video for "Mercy", directed by Daniel Wolfe features Duffy standing on top of a platform performing the song. Featured in the video are Northern Soul dancers who dance... Read all The main-release music video for "Mercy", directed by Daniel Wolfe features Duffy standing on top of a platform performing the song. Featured in the video are Northern Soul dancers who dance to "Mercy". The main-release music video for "Mercy", directed by Daniel Wolfe features Duffy standing on top of a platform performing the song. Featured in the video are Northern Soul dancers who dance to "Mercy".