When Rossi shows the Detective Zablonsky the pictures of Marcia Miller to ask if he took them himself, the pictures change from two up close shots to one close up and one full body shot without Rossi picking up a new photograph.
At the beginning of the show two men are playing chess in a park. The gray haired man moves, and calls check on his opponent. The man in the white shirt moves what looks to be his queen, across the board then calls check on the gray haired man. Since the man in the white shirt did not first move to get his king out of check, and the one move with the queen could not have accomplished this, he lost the game.
The fictional Marin Police Department handles the initial murder investigation, yet the murder took place in the Golden Gate National Recreation Area, so it should be handled by either the US Park Police or the Marin County Sheriff's Department.
The same Marin Police detective responds to the murdered couple in Albany Park, yet the City of Albany is not in Marin County; it's in Alameda County, across the San Francisco Bay from Marin County. The Albany Police Department has jurisdiction and should be investigating this murder.
Penelope Garcia while briefing the team on the Zodiac killings says that they took place from December 20 1968 to October 11 1969. The taxi driver was shot on October 11 1970.
Apart from the fact that white's move doesn't get him out of check (and therefore should be a losing move) when white checkmates black, the player playing black then knocks his king over. This is a very common TV and Film mistake. Knocking your king over indicates resignation and is completely superfluous after checkmate; it is never done by players who know the game. You cannot resign after you have lost.