James goes to visit his brother but finds the super at the building is a cop who is on the take and slowly forcing tenants out. Det. Stillwell's pranks become a nuisance for everyone. Martinez's brother's building is the scene of an "accidental" death that convinces him the cop is bad. James' father comes down on him for not keeping an eye on his brother. John contacts an old friend who's in IAB about Martinez's theories, but to protect Martinez from IAB, John takes a tape recorder in and gets Hanlon to talk. Laura's new job as an ADA takes a twist as she is assigned a case that involves Giardella.