Subject
Investigation
Murder
843
Police
140
Computer crimes
100
Missing persons
96
History
92
Crimes against
69
Private investigators
52
Forensic sciences
43
Women detectives
39
Aircraft accidents
35
Security measures
33
Criminal investigation
31
Child sexual abuse
29
Rape
29
Computer networks
28
Trials (Murder)
28
Cold cases (Criminal investigation)
25
Assassination
24
Computer security
24
Drug traffic
24
Secrecy
22
Evidence, Criminal
19
Man-woman relationships
19
Structural failures
19
Women
19
Data processing
18
Political crimes and offenses
18
Race relations
18
Serial murderers
18
Women private investigators
18
Art thefts
17
Death
17
Policewomen
16
Accidents
15
Child abuse
15
Prevention
15
Women journalists
15
Politics and government
14
Trials, litigation, etc
14
Detectives
13
Journalists
13
World War, 1939-1945
13
Ex-police officers
12
Interviewing in child abuse
12
Kidnapping
12
Detective and mystery stories
11
Families
11
Family secrets
11
Friendship
11
more ...