Plot summary
A Polish street gang known as SP-9 kidnaps the son of Samuel Gates, a judge known to be tough on crime. In exchange for his son's safe return, the gang's leader demands that the judge release a banker who is key to their money laundering operation without punishment. Breaking with his preferred means of operation, Reese makes himself known to Gates in an attempt to stall the kidnappers while he uses Fusco to process evidence from the scene of the crime. He misleads SP-9 into believing that their demands have been met, securing the release of Gates' son, before delivering them to Detective Carter and the NYPD. Meanwhile, Reese makes overtures of friendship towards Finch, but is actually trying to find out more about his daily routine.
Credits
Adapted from Wikipedia contributors, Person of Interest season 1. HTML formatting and reference markers removed.