Having established itself as the premier cable television event of the week, season four hit the ground running with its premiere episode, 'For all Debts, Public and Private,' in which Tony reveals to Christopher who killed his father, Dickie Moltisanti. Just when Tony thinks he's dodged a major confrontation with New York, another materializes when his extramarital activities are exposed. Uncle Junior's long-awaited trial gets underway prompting some jury tampering. Ralph Ciffaretto's big mouth lands him in hot water with New York but his prowess in real estate and horse racing gives him a second chance.
With Paulie Gualtieri detained for an extended period, Christopher Moltisanti is given heavy responsibilities which drive him back to drugs and booze.
Tony Soprano feels the heat of a recession and risks getting involved with his New York allies on several land development ventures but cannot agree on monetary arrangements.