There's a secret war on the streets of the city. Only a New York cop can win it. His claim to fame is finding guns on the bad guys, and Detective Second Grade B

A New York City homicide detective discusses the real work of a dedicated police investigator, shedding light on such notorious cases as the Central Park Jogger

Stay familiar with the toxicology of metals in the environment and in humans. Here is your most up-to-date source.

From the creator of HBO's The Wire, the classic book about homicide investigation that became the basis for the hit television show The scene is Baltimore. Twic

Todd uses clues from earwax and a pink handkerchief in order to discover which of his schoolmates has been in his treehouse.