A surprise visitor makes Alan's day. Caroline promises to keep Gillian's formidable secret, as long as she steers clear of Robbie. Kate's gesture at Alan and Celia's wedding stuns both Caroline and the crowd.

An unexpected visitor forces Alan to think about his past. Gillian and Caroline are anxious - his decision to keep his secret from Celia is sure to backfire. Meanwhile Caroline and a heavily pregnant Kate set a date for their wedding.

Alan finally lets Celia into his secret about Gary but is saddened when Celia punishes Caroline on her wedding day for his mistake.Meanwhile, Gillian loses her job after a humiliating visit from Cheryl.