reporter: tonight, dartmouth denies wrongdoing, and tells abc news, as a result of the misconduct we found earlier this year by the three pbs faculty members, we took unprecedented steps towards revoking their tenure and terminating their employment. rereached out to all the professor, but only heard back from one, who denies playing any role in creating a toxic environment, and also says he regrets behavior that women con sued as sexual. david? linsey davis, thank you. we re going to turn now to the attorney who took on president trump, michael avenatti. tonight, he s vumently denying claims of domestic abuse, after his arrest in los angeles. abc s kayna whitworth from california tonight. michael, what happened? what happened, michael? reporter: michael avenatti, defiant, walking out of a los angeles police preprecinct. i have never struck a woman. i never will strike a woman. i have been an advocate for women s rights my entire career. reporter: the come bbative