reporter: the defense insisted boney was the sole killer in the garage that night and that back in 2000, investigators ignored evidence pointing to the convicted felon. to make that point, the defense called damon fay, a veteran homicide detective who now trains police in how to conduct murder investigations. i don t like testifying against other cops. i m very uncomfortable with it. reporter: fay recited flaw after flaw in the camm investigation. the most significant, he said was the handling of boney s sweatshirt. when a homicide detective actually gets some physical evidence that it s got somebody s name on it and dna, you hug it, you love it. it is such a rare event. and they thought of it as an artifact. which in non-legal terms means move on, forget about it. this is nothing. well, that s right. it would have changed everything. first of all, within two weeks tops, they would have had boney. reporter: and fay pointed out other blunders as well. the heavy reliance
reporter: richard kammen was a new face on the defense team. and the reason there s nothing there is cause it didn t happen. reporter: the defense insisted boney was the sole killer in the garage that night and that back in 2000, investigators ignored evidence pointing to the convicted felon. to make that point, the defense called damon fay, a veteran homicide detective who now trains police in how to conduct murder investigations. i don t like testifying against other cops. i m very uncomfortable with it. reporter: fay recited flaw after flaw in the camm investigation. the most significant, he said was the handling of boney s sweatshirt. when a homicide detective actually gets some physical evidence that it s got somebody s name on it and dna, you hug it, you love it. it is such a rare event. and they thought of it as an artifact. which in non-legal terms means move on, forget about it. this is nothing. well, that s right. it would have changed everything. first of
evidence that puts those two people together. reporter: richard kammen was a new face on the defense team. and the reason there s nothing there is cause it didn t happen. reporter: the defense insisted boney was the sole killer in the garage that night and that back in 2000, investigators ignored evidence pointing to the convicted felon. to make that point, the defense called damon fay, a veteran homicide detective who now trains police in how to conduct murder investigations. i don t like testifying against other cops. i m very uncomfortable with it. reporter: fay recited flaw after flaw in the camm investigation. the most significant, he said was the handling of boney s sweatshirt. when a homicide detective actually gets some physical evidence that it s got somebody s name on it and dna, you hug it, you love it. it is such a rare event. and they thought of it as an artifact. which in non-legal terms means move on, forget about it. this is nothing. well, that s righ
people together. reporter: richard kammen was a new face on the defense team. and the reason there s nothing there is cause it didn t happen. reporter: the defense insisted boney was the sole killer in the garage that night and that back in 2000, investigators ignored evidence pointing to the convicted felon. to make that point, the defense called damon fay, a veteran homicide detective who now trains police in how to conduct murder investigations. i don t like testifying against other cops. i m very uncomfortable with it. reporter: fay recited flaw after flaw in the camm investigation. the most significant, he said was the handling of boney s sweatshirt. when a homicide detective actually gets some physical evidence that it s got somebody s name on it and dna, you hug it, you love it. it is such a rare event. and they thought of it as an artifact. which in non-legal terms means move on, forget about it. this is nothing. well, that s right. it would have changed ever