query: What did Chelan Simmons do before returning to her role in "Wonderfals"?
answer: At the end of 2012, Chelan Simmons had appeared in one episode on "How I Met Your Mother", before starring on an episode of "Hannibal" in 2013, in which she reprised her role as Gretchen Speck whom she portrayed in the short lived series "Wonderfalls".