At the very beginning of the episode, before Peter Walker picks up Paul Millander, the windshield wipers of the car move at changing speeds between outside and inside shots.
At the end of the episode, Millander's birthday is given as August 17, 1956, as per his birth certificate. Millander was 10 when he father was killed, dated August 17, 1959. According to his birth cert he would've been three at that time.
This is true, but it seems likely that it is deliberate. The point was that it was Grissom's birthday on the certificate, not Millander's. Why else would Millander have left a birth certificate for Grissom to find? Earlier, Grissom said of Millander, "He doesn't make mistakes". Plus the age Millander gives on the tape agrees with the birth certificate (1956 + 46 = 2002, which is when the episode first aired). Essentially Millander killed himself instead of Grissom.
As Grissom moves in, with a flashlight, to check Isabel Millander's corpse, she blinks.
The staff repeatedly refer to "Endogenous testosterone" as the result of injections and wrongly defines the term as meaning "from outside of the body".
In fact, "Endogenous" means the opposite, and is defined as being from inside of a cell or biological organism. They should have used the appropriate term "exogenous" for injected hormones, rather than "endogenous".