Suspect
A person thought to be guilty of a crime or offense.
Interrogate
To ask questions of someone thoroughly, often in an aggressive manner, especially to obtain information or a confession.
Stakeout
A period of secret surveillance of a building or an area by police in order to observe someone's activities.
Detective
A person whose job is to investigate and solve crimes.
Evidence
Information or objects that can be used to prove whether someone is guilty or innocent of a crime.
Captain
The person in charge of a precinct or a team of detectives.
Case
A specific occurrence of a crime or a situation requiring investigation by the police.
Alibi
A claim or piece of evidence that one was elsewhere when a crime was committed.
Precinct
A district of a city or town as defined for police purposes, or the police station situated in it.