context: New York City 16th Precinct Police Detective Dixon (Dana Andrews), who has been demoted by his superiors for his heavy-handed tactics, subjects murder suspect and gambler Ken Paine (Craig Stevens) to the third degree â he strikes the drunken Paine in self-defense and accidentally kills him. Paine, however, had a silver plate in his head, a fine war record, and newspaper friends. Dixon then dumps Paine's body in the river, and is later assigned to find his killer.
  Dixon tries to place the blame on an old gangster enemy, Tommy Scalise (Gary Merrill), but inadvertently puts cab driver Jiggs Taylor (Tom Tully) under suspicion instead. Having fallen in love with Jiggs' daughter and Paine's estranged wife, Morgan Taylor-Paine (Gene Tierney), Dixon tries to clear the cabbie without implicating himself, but ultimately becomes tangled in a web of his own creation. The 16th Precinct commander and Dixon's boss, newly promoted Detective Lt. Thomas (Karl Malden), are convinced that Morgan's father is the killer.
  Dixon continues to find a way to stop Jiggs from being found guilty of murdering Paine, and also tries to redeem himself. In an attempt to move the evidence away from Morgan's father and blame Scalise, Dixon comes face to face with the gangster and his cronies. A shoot-out leaves Dixon wounded, but the police arrive to arrest Scalise and his mob. Jiggs is finally cleared of the charges. At the end Dixon reassesses his life and decides to confess. He is satisfied that Morgan believes in him regardless of the outcome.
question: What does Jiggs Taylor do for a living?
answer: police