The greatest unsolved crime

(noun) Police officers who investigate crimes.

• detectives

• witnesses

• suspects

(noun) People who see something which has happened and then tell others about it.

• Prove

• Witnesses

• Victims

(noun) People who are hurt or killed by somebody in a crime.

• Prove

• Witnesses

• Victims

(noun) A person who kills another person deliberately.

• Assassin (political)

• Murder

• Murderer

(noun) The crime of killing a person illegally and deliberately.

• Assassination (political)

• Murder

• Murderer

(noun) The facts, signs, etc. which tell you who committed a crime.

• solve

• prove

• evidence

(noun) People who are thought to be guilty of a crime.

• witnesses

• murderers

• suspects

(verb) ... a mystery: To find the correct answer to why something happened.

• prove

• solve

• evidence

(verb) ... something: To use facts and evidence to show something is true.

• solve

• prove

• try