The opposing counsel in Mark Bouden's case has produced an audio and video file that directly contradicts Mark's testimony related to the accident at Mary's Muffin Shop. We are concerned that Mark will proceed to trial and perjure himself on the stand. what are the ethical obligations in regarding to perjury?

• Will we be permitted to withdraw from representing Mark due to the concern over perjury?
• Is there an obligation to notify the court of the potential for perjury?