 However, actions supposedly caused by Alex send Galleta off the case and she is on the case of a blue Chevrolet Suburban speeding away from one of the murder scenes, which may be a lead.Further investigation reveals the owner of one such Suburban whose owner lives near the Internet café where many of the Mary Smith emails were sent.A variety of other evidence also corroborates the conclusion that the Suburban's owner is, in fact, the Mary Smith killer.