Just after the teaser, Frank Tripp follows a blood trail around to the back of the house. There is a camera cut that reveals a body, laying in plain sight, with it's feet on some steps leading down to a pool area. Before the camera cut however, the steps are visible, but there is no body.
Amelia Clarke's last name is spelled Clarke, but when her mother's headstone is shown her last name is spelled Clark.
Delco was shot in previous episode and was severely injured with memory problems. Yet is suddenly back to work in a serious job collecting and investigating crimes. In reality he would never be back to work without extensive therapy and also mandatory job assessment and work being shadowed before being cleared to do the job again. By bringing him back into the job without all that opens door to compliance and potential court cases being dismissed due to procedural errors.