The Secret Life of Us (2001)

S4E10 When the Bell Rings

Even after ending their relationship and moving on with someone new, Kelly believes she can maintain a professional rapport with Frank, her ex-university lecturer. However, Frank seems determined to complicate her life at every turn. Meanwhile, Lucy is thrilled by a surprise visit from her fiancé, but her joy quickly fades when she learns the true purpose of his visit. In another twist, Nikki stumbles upon a startling secret regarding Adam, while Justin confides in Bree about something he has never shared with anyone before.