Investigation
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Investigation
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- Smuggling + Investigation
- Sex crimes + Investigation
- Computer crimes + Investigation
- Aircraft accidents + Investigation
- Sexual harassment + Investigation
- Parapsychology + Investigation
- Boating accidents + Investigation
- Missing persons + Investigation
- Rape + Investigation
- Murder + Investigation
- Kidnapping + Investigation
- Human trafficking + Investigation
- Assassination + Investigation
- Missing children + Investigation
- Child sexual abuse + Investigation
- Art thefts + Investigation
- Drug traffic + Investigation
- Child sexual abuse + Investigation -- Pennsylvania -- State College -- Case studies
- Missing persons + Investigation -- England -- Fiction
- Missing persons + Investigation
- Human trafficking + Investigation -- Minnesota -- Fiction
- Murder + Investigation -- France -- Paris -- Fiction
- Murder + Investigation -- New York (State) -- New York -- Fiction
- Kidnapping + Investigation -- Fiction
- Murder + Investigation -- Italy -- Venice -- Fiction
- Art thefts + Investigation -- Fiction
- Murder + Investigation -- England -- Fiction
- Murder + Investigation -- France -- Normandy -- Fiction
- Murder + Investigation -- Great Britain -- Case studies
- Murder + Investigation -- Wisconsin -- Fiction
- Aircraft accidents + Investigation -- Fiction
- Missing persons + Investigation -- Pacific Crest Trail
- Murder + Investigation -- England -- Pennine Chain -- Fiction
- Missing persons + Investigation -- Fiction
- Murder + Investigation -- Soviet Union -- Fiction
- Missing children + Investigation -- Fiction
- Murder + Investigation -- Europe -- Fiction
- Murder + Investigation -- Italy -- Sicily -- Fiction
- Murder + Investigation -- Washington (D.C.) -- Fiction
- Murder + Investigation -- New England -- Fiction
- Parapsychology + Investigation -- Fiction
- Murder + Investigation -- Norway -- Fiction
- Computer crimes + Investigation -- United States -- Case studies
- Murder + Investigation -- California -- Los Angeles -- Fiction
- Murder + Investigation -- England -- Somerset -- Fiction
- Drug traffic + Investigation -- Fiction
- Murder + Investigation -- Wisconsin -- Racine -- Fiction
- Assassination + Investigation -- Case studies
- Murder + Investigation -- Comic books, strips, etc
- Missing persons + Investigation -- Juvenile fiction
- Murder + Investigation -- Texas -- San Antonio -- Fiction
- Murder + Investigation -- Maine -- Eastport -- Fiction
- Murder + Investigation -- England -- Juvenile fiction
- Murder + Investigation -- Juvenile fiction
- Murder + Investigation -- England -- London -- Fiction
- Murder + Investigation -- England -- London -- Juvenile fiction
- Rape + Investigation -- Montana -- Fiction
- Murder + Investigation -- Maryland -- Montgomery County -- Case studies
- Murder + Investigation -- Oklahoma -- Fiction
- Murder + Investigation -- Maryland -- Baltimore -- Case studies
- Attempted assassination -- England -- Brighton -- Investigation -- History -- 20th century
- Murder + Investigation -- England, South East -- Fiction
- Smuggling + Investigation -- Fiction
- Murder + Investigation -- New York (State) -- Rochester
- Murder + Investigation -- Japan -- Fiction
- Murder + Investigation -- France -- Fiction
- Murder + Investigation -- Italy -- Perugia