11x05 Baby Kate and the Imaginary Mystery; Strangers on a Train 11x05 Baby Kate and the Imaginary Mystery; Strangers on a Train 11x05 Baby Kate and the Imaginary Mystery; Strangers. \rbr\rbr11x05 Baby Kate and the Imaginary Mystery; Strangers on a Train Arthur is a CanadianAmerican animated educational televisionfor children, created by Cookie Jar Group (formerly known. \rbr\rbr11x05 Baby Kate and the Imaginary Mystery; Strangers on a Train 11x05 Baby Kate and the Imaginary Mystery; Strangers on a Train 11x05 Baby Kate and the Imagi. 11x05 Baby Kate and the Imaginary .