Dr. Brett Morton was a shrink in the episode "Conscience" whose son was kidnapped and murdered by his 13 year old neighbor, Jake O'Hara.
Dr Morton has writen papers on the subject of child sociopathy. Citing that their condition cannot be cured and measures should be taken to prevent these children from commiting inevitable acts of violence.
Dr. Morton initially requests leniency for the boy, but after information comes to light that he has psychopathic tendencies and that he will be released from prison by the time he is 18, Dr. Morton regrets his decision and shoots Jake in the courthouse. Dr. Morton then uses his expertise as a shrink to try and convince the court he had Post Traumatic Stress Disorder at the time. He was subsequently acquitted of the murder. At the end, Stabler and Novak confront Morton for his "manipulation" towards the court, like Jake. Morton agrees with Stabler, but points out one thing that distinguished him from Jake: that he would have killed again whilst the doctor himself will not.