The parents of JonBenet Ramsey say they hope the investigation into their 6-year-old daughter's 1996 murder continues -- and that publication of their forthcoming book (due in March) helps fuel it. "If the publicity from this book keeps it hot, keeps it on the minds and on the forefront of the public, great," Patsy Ramsey told Nashville's WSMV-TV in an interview broadcast Tuesday night. "Because somewhere out there is a killer and we're going to find out who that is." A grand jury last month ended its 13-month investigation without an indictment, but Colorado authorities say the Ramseys remain under suspicion. Authorities also acknowledge that they have little money left to continue the investigation.