Michelle "Shell" Dockley is a fictional character from the award-winning prison drama series Bad Girls. She is portrayed by British actress Debra Stephenson. Shell was one of the lead characters in the series. She was Top Dog of G-Wing in Larkhall prison. Shell appeared from the first episode in Series 1 until the last episode of Series 3, and returned for the first four episodes of Series 5, which were her final appearances.