>> Emotional testimony leading off Bill Cosby's sexual assault trial continuing Tuesday in Pennsylvania. The 79 year old comedian accused of drugging and sexually assaulting former Temple University employee Andrea Constand. The first witness saying she held off for years going public with her story of how Cosby drugged and sexually abused her, for fear no one would believe her over someone she called the biggest celebrity in the world.
Reuters correspondent Joseph Ax.>> The first witness called by the prosecutors was Kelly Johnson, who was testifying not about the assault for which Cosby's on trial in 2004, but for a separate assault that she says occurred 3,000 miles away and 8 years earlier in Los Angeles. She says that Cosby used the same type of method that he's accused of using against Andrea Constand.
>> Cosby is not charged with assaulting Johnson, but prosecutors are using her testimony to show that he followed a pattern of behavior. Cosby's attorney's hoping to poke holes in her account.>> Cosby's lawyer, Brian McMonagle went after Johnson very hard on cross examination. He claimed that in the deposition, in 1996, she offered very different details about the alleged assault.
>> Prosecutors are hoping to build their case, on Tuesday, with testimony from Johnson's mother. If the judge allows her to take the stand, despite objections from Cosby's defense team. Cosby, who his lawyers say is legally blind is not expected to testify though he has denied allegations against him.
However prosecutors will be using the entertainer's words as evidence against him from a related deposition where Cosby admitted to giving women sedatives. Constand is expected to testify during what is expected to be a two week trial that could come down to her word against Cosby's.