Attorney Oliver Resor is prosecuting a pilot who was drunk when his plane crashed, killing 45 people; and Sandra Broome is conflicted about prosecuting a black cop charged with assaulting a skinhead.

Sandra prosecutes a drug company that's ""using inner-city babies as lab rats"" to test a measles vaccine; officials unearth the identity of the man who killed Michael's family; Gaffney pursues a relationship with a bond trader; and Oliver learns his father has cancer.

Michael resents having to help an attorney prosecute a man involved in the murder of his family - a case he wanted to handle - so he withholds information; and Oliver is arrested after the tobacco company plants cocaine in his car.

Erica assigns Jessica to prosecute an artist who took nude photos of her friend's daughter and posted them on the Internet; and Michael resumes work on the mob case, but is frustrated when agents discover there's a leak among them.

Mrs. Abruzzi gives Michael a tip leading to Iredesco's arrest after learning that her husband's killer also murdered Michael's family; a tobacco-company informant dies after warning Oliver and Jessica of a secret agency that monitors the anti-smoking movement.