Overview: It's 1961. Ronni is just back from Italy, and Sylvia and Chris have moved into a flat together. Automation of the telephone switchboards threatens to lead to job losses.
Overview: Chris is still at war with new engineer Dave Curtis, and Sylvia is dithering over an invitation from Mike. But Ronni is hiding a secret that could have repercussions for them all.
Overview: Miss Marriott persuades Chris, Sylvia and Ronni to perform at a GPO charity gala night. But the arrival of a young Australian telephonist threatens to upset all their plans.
Overview: Ronni and Sylvia decide to throw a surprise birthday party for Chris. But their plans are almost ruined when Chris realises, much to her consternation, that her enigmatic suitor is not Dave.
Overview: Ricky Rocket - a Billy Fury lookalike and guitarist with his own band - tries to recruit Chris to be his lead singer. But a flu epidemic at the exchange could lead to a change in plan.
Overview: Chris and Dave are set to go on their first official date. while Miss Armitage finds romance at the Locarno tea dance.
Overview: Mike plans a romantic trip to Paris for Sylvia, which leads her to discover a terrible family secret.
Overview: Susi and Johnny are ready to tie the knot. Meanwhile, Chris suspects Dave of keeping a secret.