an object or fact that someone discovers that helps them solve a crime or mystery
clue
to make someone give you money or do what you want by threatening to tell people embarrassing information about them
blackmail
an attack on someone in a public place in order to steal their money, jewellery, or other possessions
mugging
someone who steals money and other things from people’s pockets and bags, especially in crowded places
pickpocket
a chemical substance that contains genetic information and is found in all living cells and some viruses
DNA
crime committed using the internet, for example stealing someone’s personal information or introducing harmful programs into someone’s computer
cybercrime
someone who has an alibi can prove that they were somewhere else when a crime was committed and so can claim to be not guilty
alibi
a mark that you leave on something when you touch it, showing the pattern of lines on the skin of your fingers
fingerprint
to illegally take someone away and make them a prisoner, especially in order to make their family or government give you money or allow you to do what you want
kidnapping
someone who sees a crime, accident, or other event happen
witness