In a 1968 Batman three-episode arc from the show's third and last season, Peters portrayed Lady Prudence, daughter of main villain Rudy Vallee as Lord Marmaduke Ffogg, alongside Glynis Johns as Lady Penelope Peasoup, Lord Ffogg's sister, all of whom lived near the fictional English city of Londinium.

She next appeared on the series Get Smart in 1968, in which she played Mrs. Emily Neal, a KAOS agent sent to foil American track and field athletes.

[1][2] According to The Hollywood Reporter, Peters' Neal character was a parody of The Avengers' Emma Peel, played by Diana Rigg.

[1] Her other television work during the 1960s and 1970s included roles on It Takes a Thief, Hogan's Heroes, The Rat Patrol, Twelve O'Clock High, Daniel Boone, The Man from U.N.C.L.E.

[2] Lyn Peters died at her home in Palm Springs, California, on September 10, 2013, aged 72, from undisclosed causes.