Kat McDonough

Lizzi Marriott's friend and suspect in her disappearance

Kat McDonough was a 18-year-old college student who was friends with Lizzi Marriott. McDonough was questioned by police in connection with Marriott's disappearance and claimed that Marriott did not arrive at her apartment that night. McDonough's relationship with Marriott's boyfriend, Seth Mazzaglia, was also scrutinized by police. McDonough's involvement in Marriott's disappearance remains unclear.