A person who is hurt or killed by somebody in a crime.
victim
People who are thought to be guilty of a crime.
suspects
(... a mistery) To find the correct answer to why something happened. (verb)
solve
Police officers who investigate crimes.
detectives
A person who plans and kills another person.
murderer
(... something) To use the facts and evidence to show something is true.
prove
People who see something that has happened, and tell the others about it.
witnesses
The facts, signs, etc., that tell you who commited a crime.
evidence
The crime of killing a person illegally and deliberately.
murder