Meeting with a man imprisoned for manslaughter seven years previously, the Chief begins to doubt the evidence which he himself once collected. Faced with extreme opposition from members of the DA's office, including the DA himself, Ironside sets out to review the case; and hopefully to prove a man innocent.

The Chief continues his to try to reopen the case, struggling to convince a young mother to come forward and admit to her part in events that she would rather try to forget. Meanwhile he comes ever closer to the truth, as somebody tries to ensure that he never finishes his investigations.

The work of a quartet of musicians is being pirated, and whilst Ed and Fran are investigating, a member of the group is murdered in front of them. Their investigations lead them into the backgrounds of all those involved at the recording studios where the three survivors work, but all of the possible suspects appear to be friends with the group, and therefore unlikely candidates.