John Eimen Courtesy of the Eimen Family Share on Facebook Share on X Google Preferred Share to Flipboard Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Send an Email Print the Article Post a Comment John Eimen, a child actor in the 1950s and '60s who appeared on such TV shows as Leave It to Beaver, McKeever and the Colonel and The Twilight Zone, has died. He was 76. Eimen died Friday of prostate cancer at his home in Mukilteo, Washington, his family announced. He only learned of his cancer diagnosis in September.