Amanda Young (neé Warner) is the younger sister of Eric Warner in the second season of the American version of "Secrets and Lies". Played by American actress Mekia Cox, Amanda makes her debut in the Season 2 episode "The Fall". Amanda comes to Eric's defense when he is accused in the murder of his wife, Kate. However, in the Season 2 finale, "The Truth," Amanda is revealed as the one who murdered Kate.
A successful attorney for the Public Defender's office, Amanda Warner is fiercely protective of her family. Being the middle sibling to Eric and Patrick, as well as daughter to John, she has her hands full being the only woman in a family of complicated men. Amanda was the one who introduced her brother to Kate, and feels especially broken after her untimely death. With such close ties to the victim, and a career that has shaped her into a hard nosed, no nonsense lawyer, Amanda proves to be a worthy adversary of Detective Cornell's aggressive tactics when Cornell singles out Eric Warner as the prime suspect in Kate's death.