It is to be noted that the in the above topic related to Criminal Justice, the missing evidence in the Science of Curiosity regarding who killed Clara Carter is Murder weapon and stolen items from Clara's house. The timeline of events of what happened are given below.
Frederick and Clara left a restaurant after an argument at 7:28 pm. Frederick allegedly shot Clara in the woods after 8 pm, leaving a blood trail.
Frederick then broke into Clara's house, stole items, and set her car on fire using lighter fluid. He returned to the restaurant to retrieve his car.
The burned vehicle was discovered by hikers at 5:45 am the next morning. The sequence of events suggests a series of criminal actions, including assault, burglary, and arson.