"investigative" - key terms from Wikipedia

bureau of investigative	services
criminal investigative	analysis
criminal investigative	service
investigative
investigative	committee
investigative	journalism
investigative	judgment
investigative	report
investigative	reporter
investigative	reporting
investigative	role
investigative	service
naval criminal investigative	service
naval investigative	service
pbs newshour investigative	report
philippine center for investigative	journalism
pulitzer prize for investigative	reporting