Maisie Undercover: Old Flames (2006)

Maisie Calloway, the beautiful ex-cop and bar owner now works as a private investigator on the side. She takes the case when one of her bar patrons is searching for his missing girlfriend, a call girl trying to leave her pimp. Once again, she enlists the aid of her ex-husband police detective and her now ex-boyfriend FBI agent, but this time they both shut her out of the investigation because the pimp turns out to be a big criminal they're both after. On the advice of her favorite barfly, Maisie takes matters into her own hands and goes undercover as a call girl to solve the case.