Definition of "look into" [look into]

• To investigate, explore, or consider (verb)

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• "Jack Mercier's words, spoken on the day that he first asked me to look into Grace's death, came back to me as I learned of what had been found in the main salon of the Eliza May, its decks stained with red and Jack Mercier's crucified form hanging from the mast."
• "I wondered too what Curtis Peltier might have on Mercier that would cause him to hire an investigator to look into the death of a girl he barely knew."
• "Now Jack Mercier was offering me good money to look into Grace Peltier's death, but something told me that the money would be hard earned."