Dann Florek is featured in a cameo appearance as Captain Donald Cragen. However, the opening credits mistakenly identify Cragen as a Lieutenant. Cragen is, and always has been, a Captain in his entire run on the show. Subsequent rebroadcasts featured a fixed version of the credits where Cragen is correctly identified as a Captain.
When D.A. Arthur Branch is talking to E.A.D.A. Jack McCoy and A.D.A. Serena Southerlyn about the case, both Branch and Southerlyn make statements about Jacob Lowenstein pleading his charge down to manslaughter. But in Indifference (1990), where Lowenstein first appeared, he is convicted of murder by a jury. It is his wife who takes the plea bargain. In addition, Lowenstein was convicted by the jury for second degree murder, not manslaughter.
Jacob Lowenstein tells Detective Joe Fontana and Detective Ed Green he earned a law degree while in prison and that he represented fellow prisoners as clients in return for them not molesting him, being a convicted child molester. This is implausible for the following reasons: (1) while incarcerated prisoners are allowed to take some college courses, they would never be allowed to take enough to earn an advanced or even an undergraduate degree, and (2) as a convicted felon, Lowenstein would never be allowed to be bonded or to sit for a bar exam.