Did 'star witness' sway jury in Bill Cosby's sex assault retrial?

Jurors in Bill Cosby's sexual assault retrial heard Wednesday from the star defense witness.

The testimony attempted to discredit Cosby's chief accuser, claiming that she was looking for a get-rich scheme.

Defense attorneys called witness Marguerite Jackson to the stand. She's an academic advisor at Temple University who claims that, back in 2004, Cosby accuser Andrea Constand made a comment to her after seeing a story on the news of a high-profile sex assault and a payday for the victim.

According to Jackson, Constand said it was something similar to what happened to her, but claimed she didn't report it because the man was a high-profile person and she knew she couldn't prove it.

Then, Jackson claims Constand backtracked, saying it didn't happen but she could say it did and get money to go back to school or open a business.

Jackson claims this conversation happened when she was rooming with Constand on a Temple basketball trip to the University of Rhode Island.

Prosecutors found no records confirming that Jackson was on that trip, and Constand says she didn't room with Jackson and doesn't remember this conversation happening.

Earlier Wednesday, when the case was still in the hands of the prosecution, attorneys called a detective to the stand who read a transcript of Cosby's 2005 deposition, during which he admitted to getting Quaaludes from his doctor in the '70s for back pain, said he liked to have the party drug on hand and admitted giving it to women before sex.

Thursday, the defense case continues, and the jury panel is expected to hear testimony from a toxicology expert.

On Thursday morning, local attorney Shaka Johnson joined "Good Day Philadelphia" to discuss the big developments from Marguerite Jackson's testimony. (Watch the video above to hear Johnson's analysis of the testimony.)