Sara Manning was a young woman living in New York City, and the victim in the episode "Nanny McDead". She was accidentally killed by her friend, Chloe Richardson, and stuffed into a dryer after it was revealed that both nannies were having an affair with the same man - Chloe's employer, Ian Harris, who also got Chloe pregnant. Sara's case was the first one that Castle saw from beginning to end, and Beckett's handling of it set much of the tone for his portrayal of Nikki Heat.