Aimee Garcia Aimee Garcia

Off the Map star Aimee Garcia has joined Dexter, a show rep tells TVGuide.com.

Garcia will play Jamie, the younger sister of Batista (David Zayas) whom Dexter (Michael C. Hall) hires as a nanny for baby Harrison. No word yet on what happened to Sonya (Maria Doyle Kennedy), Harry's au pair last season.

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TV Line was the first to report the casting.