Screenwriter Yagemann's seven years plus teaching experience in the Los Angeles public school system provided the basis for One Eight Seven (1997), his first produced film script. Yagemann's credits in the entertainment industry include writing for the television series Love Connection (1983), Liar's Club (1976), and Jeopardy! (1984), as well as for the Lifetime Channel. Following graduation from college with a degree in film and television production, Yagemann began working as a page on the Norman Lear comedies All in the Family (1971) and The Jeffersons (1975).