In opening scene, close-up of hammer used in bludgeoning murders already has splotches of blood between claws before it is even used on victims.
Around 8:30 when Carruthers is following Ellie on the road his car window changes from open to closed and open again during shots.
When Ellie and Mrs. Deere are discussing work, Mrs. Deere crosses her arms. Then the focus switches to Ellie and Mrs. Deere's arms are down. Switch focus to Mrs. Deere, again, and the arms are crossed, again.