Transcript for Police probing crimes over last 20 years in Calif. sexual assault case
Reporter: David, will helprovide thnds of hopl 2space aters to ctoected by this dister. Thank you. D the alleged rape allegations aar surgeon. People for two decade here's wh WYOU? Reporter: Tonight, S say the arming doctor W ared on Thi bravreow could have been preying on women for year We're examining crimes that may have taken place from two grant Robicheaux and his rlfriend we th and sexuay assault two women, one attack allegedly recorded. Thorities now idening more an a dozen potential victims. The couple allegedly stalking their prey at bars. Robichaux,y say, may havesepps. Ou DW what's behind whrs to be that perfect smile. Rter: Lauren Heyden met bias year under. I whim. Tarted trying to tear my top off.when I saino he wasn even hearing me. Reporter:aty attorneys for the couple say investigorad evidence for nths. If the policehe a. Office were so concerned about these allegations, one would thinthave been arrested long ag Repter: Investigators say they've seized thousf videos.eys have dd all allegatiof nonconsensual sex. David? Thank you.
This transcript has been automatically generated and may not be 100% accurate.