. >> 15-year-old terry pugh died late that january.ody dropped by the roadside in a rural county 20 miles from home. he had been strangled. his mother -- >> whoever killed him, he had to tussle with him because he had scratches all over him. >> it gives me chills down my spine still. >> to this day, kathy andrews does not believe wayne's explanation. >> he did not fall in a bush. it was after you realized it, it was fairly obvious. and i don't know what else could have caused that kind of wound on his arm. >> the intervals between murders were shrinking. 19 days from lubie jeter's disappearance until terry pugh's death, then 15 days until the next victim. soon 13, then 11, and before long, a body a week. fbi profiler roy hazelwood says this is not unusual for serial killers. >> they come to believe that they, in fact, are almost immune to mistakes, if you will. and they can take greater risks because it's more exciting and because they're so superior, they don't have to worry about the inferior police catching them. >> after a month, l

. >> 15-year-old terry pugh died late that january.by the roadside in a rural county 20 miles from home. he had been strangled. his mother -- >> whoever killed him, he had to tussle with him because he had scratches all over him. >> it gives me chills down my spine still. >> to this day, kathy andrews does not believe wayne's explanation. >> he did not fall in a bush. it was after you realized it, it was fairly obvious. and i don't know what else could have caused that kind of wound on his arm. >> the intervals between murders were shrinking. 19 days from lubie jeter's disappearance until terry pugh's death, then 15 days until the next victim. soon 13, then 11, and before long, a body a week. fbi profiler roy hazelwood says this is not unusual for serial killers. >> they come to believe that they, in fact, are almost immune to mistakes, if you will. and they can take greater risks because it's more exciting and because they're so superior, they don't have to worry about the inferior police catching them. >> after a month, lubie jeter's

. >> reporter: 15-year-old terry pugh died late that january.d beenled. . >> whoever killed him hat to tussle with him. >> reporter: to this day, cathy andrews does not believe wayne's explanation. >> he did not fall in a bush. that was after he realized it was fairly obvious. and i don't know what else could have caused that kiechbd of wound on his arm. >> reporter: the intervals between murders were shrinking. then, 15 days until the next victim. soon, 13. then 11. and before long rk a bd day a week. >> they come to believe that they, in fact, are almost immune to mistakes, if you will. around thal can take greater risks because it's more excite ing and because they're so superior, they don't have to worry about the inferior police. >> after a month, lubey's body would be found in the woods. the medical examiner would testify jeeter apparently had been killed by e by a choke hold around the neck. a forearm akroosz the next. it's a question we'll have reason to ask wayne williams by the end of all of this. >> it's actually a very simple questio