Episode 71 (22 October 1985)

Synopsis
In the Queen Vic Arthur, Andy, Debbie, Pete, Sharon, Kelvin and Saeed meet to discuss the Fireworks display. Pete informs Arthur that Lou and Ethel want to join the committee but they are turned down. It is decided that they will however ask Dot, Lou and Ethel to dress up as witches to help raise funds for the fireworks. Pete later takes great pleasure in giving Lou and Ethel the 'good' news.

In the Café Sue suggests to Ali that, as it is unlikely that the council will give them a house, they buy their own home and that they start making a new family. Ali appears over the moon and after phoning his brother to arrange a mortgage he leaves. Later Guizin, Ali's sister-in-law, arrives at the Café, and informs Sue that Ali and Mehmet did not meet up to discuss a mortgage but instead have been gambling in the horses. After thanking Guizin, Sue waits for Ali to return to the Cafe before giving him a dressing down.

Also on the Square Mary is given 'dancing' lessons from Sheena after she asks her about becoming a stripper. Den warns Michelle against taking motorbike lessons form Lofty after he arrives on a borrowed motorbike. Debbie infuriates Andy by asking Saeed about the shop after she hears he may be seling up. After Tony, Pauline and Ethel speculate on Nick's involvement in the recent break-ins at the Launderette and Surgery and Dr Legg is met with denial when he confronts him.

Following on from the previous evenings conversation Kathy is spooked when she catches Nick spying on her. Later that day Nick spooks her again asking her if she has given Michelle any advice on being a single mum. That evening Kathy and Pete have a blazing row after he and Simon turn up late again for dinner and she has thrown it in the bin again. Kathy storms out of the flat where she is accosted by Nick who admits to stealing her medical file from Dr Legg's surgery and blackmails her for £200 to keep quite about her giving birth to a child when she was only fourteen.

Duff-Duff: Nick Cotton

Cast
Main cast
 * Gillian Taylforth as Kathy Beale
 * John Altman as Nick Cotton
 * Peter Dean as Pete Beale
 * Nick Berry as Simon Wicks
 * June Brown as Dot Cotton
 * Anna Wing as Lou Beale
 * Wendy Richard as Pauline Fowler
 * Bill Treacher as Arthur Fowler
 * Susan Tully as Michelle Fowler
 * Leslie Grantham as Den Watts
 * Anita Dobson as Angie Watts
 * Letitia Dean as Sharon Watts
 * Tom Watt as Lofty Holloway
 * Sandy Ratcliff as Sue Osman
 * Nejdet Salih as Ali Osman
 * Andrew Johnson as Saeed Jeffery
 * Shirley Cheriton as Debbie Wilkins
 * Ross Davidson as Andy O'Brien
 * Linda Davidson as Mary Smith
 * Gretchen Franklin as Ethel Skinner
 * Leonard Fenton as Dr Legg
 * Oscar James as Tony Carpenter
 * Paul J. Medford as Kelvin Carpenter
 * Roly as Roly
 * Willy as Willy

Guest cast
 * Ishia Bennison as Guizin Osman
 * Dulcie Liecer as Sheena Mennell

Crew

 * Writer - Peter Batt
 * Production Manager - Liz Mace
 * Production Associate - Allison Gee
 * Production Associate - Nicholas Orchard
 * Production Assistant - Carol Bolt
 * Assistant Floor Manager - Heidi Easton
 * Properties Buyer - Judith Farr
 * Properties Buyer - Monica Boggust
 * Lighting Director - Don Babbage
 * Technical Co-ordinator - Lance Wood
 * Sound Supervisor - Lance Andrews
 * Camera Supervisor - Roger Goss
 * Videotape Editor - Mike Thomas
 * Vision mixer - Jean Sutherland
 * Title Music - Simon May and Leslie Osborne
 * Graphic Designer - Alan Jeapes
 * Costume Designer - Barbara Kidd
 * Make-Up Designer - Mary Liddell
 * Senior Designer - Keith Harris
 * Designer - Suzy Lawrence
 * Script Editor - Tony Holland
 * Producer - Julia Smith
 * Director - Robert Gabriel