All New K.C. Undercover Season 1 Episode 18 , Find out who did it on Sunday July 26 at 9:30p as part of Whodunit? weekend on Disney Channel.\rbr\rbr\rbr\rbrWhen a woman K.C. meets goes missing, she must find her and save her. K.C. and the Vanishing Lady premieres Sunday, July 26 at 8pm part of Disney .