TV The Avengers - Season 3 Episode 21 : Build a Better Mousetrap The Avengers - Season 3 Episode 21 : Build a Better Mousetrap 7.712/10 by 146 users What does Cathy joining a motorcycle gang, two elderly ladies who own a watermill and claim to be witches, and all of the clocks stopping at a local atomic research station have in common? They're all present in Brian Clemen's first great step into the bizarre. Details Casts Posters Images Title The Avengers - Season 3 Episode 21 : Build a Better Mousetrap Alternative Titles Avengers, Οι Εκδικητές First Air Date 1961-01-07 Last Air Date 1969-05-21 Number of Episodes 161 Number of Seasons 6 Genres Action & Adventure, Crime, Sci-Fi & Fantasy, Networks ITV1, Casts Patrick Macnee, Linda Thorson, William Lucas Plot Keywords , John Steed Patrick Macnee Tara King Linda Thorson William Lucas Episodes List The Avengers Season 3 :Episode 1 Brief for Murder Brief for Murder 1963-09-28 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 2 The Undertakers The Undertakers 1963-10-05 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 3 Man with Two Shadows Man with Two Shadows 1963-10-12 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 4 The Nutshell The Nutshell 1963-10-19 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 5 Death of a Batman Death of a Batman 1963-10-26 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 6 November Five November Five 1963-11-02 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 7 The Gilded Cage The Gilded Cage 1963-11-09 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 8 Second Sight Second Sight 1963-11-16 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 9 The Medicine Men The Medicine Men 1963-11-23 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 10 The Grandeur That Was Rome The Grandeur That Was Rome 1963-11-30 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 11 The Golden Fleece The Golden Fleece 1963-12-07 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 12 Don't Look Behind You Don't Look Behind You 1963-12-14 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 13 Death "à la carte" Death "à la carte" 1963-12-21 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 14 Dressed to Kill Dressed to Kill 1963-12-28 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 15 The White Elephant The White Elephant 1964-01-04 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 16 The Little Wonders The Little Wonders 1964-01-11 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 17 The Wringer The Wringer 1964-01-18 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 18 Mandrake Mandrake 1964-01-25 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 19 The Secrets Broker The Secrets Broker 1964-02-01 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 20 Trojan Horse Trojan Horse 1964-02-08 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 21 Build a Better Mousetrap Build a Better Mousetrap 1964-02-15 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 22 The Outside-In Man The Outside-In Man 1964-02-22 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 23 The Charmers The Charmers 1964-02-29 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 24 Concerto Concerto 1964-03-07 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 25 Esprit de corps Esprit de corps 1964-03-14 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an... The Avengers Season 3 :Episode 26 Lobster Quadrille Lobster Quadrille 1964-03-21 A quirky spy show of the adventures of eccentrically suave British Agent John Steed and his predominantly female partners. Jonathan Steed - an...