Murder 3 Bisexual men 2 Crimes against 2 Divorced women 2 Gay men 2 Investigation 2 Man-woman relationships 2 more ... Private investigators 2 Radioactive substances 2 Triangles (Interpersonal relations) 2 Women 2 Boxers (Sports) 1 Coal mines and mining 1 Courts-martial and courts of inquiry 1 English literature 1 Ex-convicts 1 Falconry 1 Gamblers 1 Gambling 1 Gangsters 1 Hammer, Mike (Fictitious character) 1 Kestrels 1 Racetracks (Horse racing) 1 Robbery 1 Showgirls 1 Swindlers and swindling 1 Teacher-student relationships 1 Teenage boys 1 Wildlife rehabilitation 1 Women psychiatrists 1 less ...