Alec Baldwin is having his day in court.
The 30 Rock star arrived at a New York City courtroom this morning to testify against Canadian actress Genevieve Sabourin, who was arrested in 2012 and charged with aggravated harassment and stalking after allegedly trying to contact Baldwin at his Manhattan apartment.
According to WNBC's Andrew Siff, Baldwin took the stand and tearfully recalled how he felt "extremely, extremely, extremely threatened" when Sabourin showed up at his home last year.
The actor went on to testify that the calls and emails that he subsequently received from Sabourin were "disturbing" and "threatening," many of which referred to his ex-wife, Kim Basinger, as a "monster."
Baldwin talso testified that he never had a sexual or romantic relationship with Sabourin, who met Baldwin on the set of 2002's The Adventures of Pluto Nash.
ABC News reports that throughout Baldwin's testimony, Sabourin had several outbursts, including one where she yelled, "You're lying!"
In April 2012, Baldwin called the police on Sabourin after he became concerned for the safety of himself and his now-wife, Hilaria Baldwin, when Sabourin showed up at their apartment building. Sabourin, however, did not make it inside.
Hilaria is also expected to testify.