he died in 200. >> when we control back, curtis dean anderson makes a deathbed confession and closes the book on one of the most high-profile child disappearance cases. >>> and cases. >> garcia. >> for 21 years the disappearance of amber swart- garcia remain a mystery, but before curtis dean anderson deed the convicted murder and child abductor admitted he abducted her. >> reporter: police are convinced he kidnapped and killed 7-year-old amber swartz in june of 19 the 8. fbi agents spoke to hill in prison where and he told investigators he drove swartz to arizona and suffocated her in a tucson hotel room. he said he dumped the body in the desert. investigators have never found a sign of her and that leaves kim swartz, amber's mother with lingering questions. >> my problem is confirming everything that he said at this point. and is it really him? >> reporter: those questions may never be answered. anderson died in prison before investigators could question him again. >>> when we come back on "a second look," the man the fbi reportedly suspects of abducting and killing two 13- year-old