welcome back to "dateline." a year after andrea constand said she was sexually attacked by bill cosby, she sued in civil court. during the deposition she looked him in the eye as he admitted on the record to giving her pills that night. he also admitted acquiring prescriptions for quaaludes specifically for young women he wanted to have sex with. constand received $3.8 million in the settlement. while the result was satisfying, she still could not get what she'd always wanted, acknowledgement that what bill cosby did was criminal. now, over a decade later, had the day she been waiting for finally arrived? >> reporter: in june 2017, bill cosby went on trial in a courthouse outside philadelphia for sexually assaulting andrea