00:00The AvengersSeries 4Episode 20: The Danger MakersBBC Four Duration: 1 hour Sat 25th Oct 2008, 00:00 on BBC Four60s drama series. Steed joins a secret society, and Emma is forced to walk the plank.ContributorsJohn Steed:Patrick MacneeEmma Peel:Diana RiggMajor Robertson:Nigel DavenportDr Harold Long:Douglas WilmerGenresDramaAction & AdventureDramaCrimeBrandThe AvengersSeriesThe Avengers: Series 4 Source: BBC Online