Detective Donna Williams is a recurring character in the first and second season of the Hulu Original Only Murders in the Building. She is originally assigned to the Tim Kono murder case, but closes the case prematurely. She later becomes interested in the case following advice from her wife who begins listening to the investigators podcast, Only Murders in the Building.
Afterwards, Detective Williams is also assigned to the Bunny Folger murder case and begins investigating this. She grows closer to the three investigators and eventually begins working with them to solve the murder when it becomes clear that the Police aren't close to solving the case.