a new lawsuit has been filed against bill cosby by one of his accusers, tamara green says she was drugged and sexually assaulted by the comedian in the early 1970s. and she is now suing cosby, not for assault, but for defamation. we spoke with green's attorney earlier. >> we advised her that this was an avenue that was appropriate. to be followed and pursued to have her day in court. to have a forum where truth can be tried, where both sides can be heard on the issue of whether or not there was a sexual assault. if there was, she wins, if there wasn't, mr. cosby wins. each side will be able to get their witnesses and their evidence and present it to a jury and a jury will decide. >> so does this lawsuit have merit? let's bring in mark geragos, a cnn legal analyst and defense attorney, great to see you,