The fact that there was a year's gap between the filming of Northwest Passage (1989) and this one is evident in the different hairstyles sported by some of the cast. Although they take place on consecutive days, James Hurley, Sheriff Truman, and Deputy Brennan all have shorter haircuts by the next day, while Donna Hayward, Catherine Martell and Audrey Horne (in particular) all have noticeably longer hair.
In the wide shot of the deputy walking down the hospital corridor, the door to the blue-lit room is already fully open. In the close-up shot that follows, the door can be seen opening again.
When Cooper walks into the conference room Truman's hand is away from his face. In the next shot his fingers are stuffing donut into his mouth.
In the pilot episode on the morning after Laura's murder Bobby and Shelly are surprised to find that Leo has returned home from the road. However, in this episode while in the jail cell Bobby tells Mike he saw Leo the night that Laura was murdered.