motrek

Hi guys, I'm new here and I was hoping you could help me out. I vaguely recall an episode of L&O where it turned out that a recurring character had been falsifying evidence or giving false expert testimony on a regular basis in order to help the DA get convictions. This came up in a conversation I was having with somebody and it has been driving me nuts for a week. I have searched the internet for hours trying to figure out who the character was (medical examiner? psychiatrist? forensic examiner?) and now I'm not even sure if it was an episode of L&O that I'm remembering. I appreciate any help in advance!