Lilly Carlyle is an actress and the daughter of tycoon Wharton Carlyle. She had a recreational lifestyle with her boyfriend Eddie Dutton and was supplied cocaine by undercover federal agent John Hampton.
When Hampton killed Wharton to prevent his cover being blown, Lilly was convinced to testify against Hampton once it was revealed he framed Dutton and told a mobster he was surveying to commit the murder, watching the mobster's testimony herself to reveal the truth to her.
Grief-stricken, she said on video she wasn't Hampton's alibi, and he smugly rejected a plea but was still arrested regardless. (CI: "The Insider")