Larry Collier, newspaper editor and Barney's brother, is killed while trying to establish a link between corrupt police chief Abbott and Corley, the head of a ghetto mob who masks his illegal activities with an insurance front company. Barney, set up with a past as a crooked accountant, gets close to Corley by rescuing is secretary Millie - Corley hires him on when he finds out about his ""past."" Barney plants money to make it look like Corley's assistant Goslin is working against him, while the IMF use a phony seance to convince Goslin to quit with some incriminating evidence. Jim arrests Goslin with the evidence, a codebook, and uses it to force Abbott to back him as a mob boss then bribes Corley's guard to try and kill the mob leader. Barney rescues him and Corley runs into Jim, who threatens to take him to Abbott - knowing Abbott will have him killed, Corley turns state's evidence.

A private detective, Edison, has pictures incriminating Syndicate boss Vochek in a murder and is using them to blackmail the mobster. The IMF need to get the pictures to get Vochek convicted, but Edison has been convicted and is in prison for six months. Since Edison is unaware that his accomplice Leona is dead, Casey takes her role while Jim is Edison's cellmate and helps him to escape, then fake their deaths. Casey-as-Leona tells Edison she sent the evidence to the D.A. after she heard Edison was dead, and Jim convinces Edison she is keeping the pictures to pull off her own blackmail scheme. When Edison confronts her, Jim fake-shoots her but she calls a confederate to get the film - desperate, Edison reveals the location himself as he goes for it, and ends up arrested.

Syndicate boss Mike Apollo was being infiltrator by a Federal agent, Parnell, who disappeared - the IMF assumes Apollo is torturing him for information. The IMF must learn where Parnell is. Since fellow Syndicate boss Joe Epic's wife Leona died under mysterious circumstances while Apollo was elsewhere with Parnell, Jim as an insurance investigator reopens the case and hints to Epic his wife was involved with an affair. The IMF plants evidence the affair was with a fellow Syndicate boss, Apollo himself. Jim leaks a fake story to Epic's secretary that Epic is planning to kill Apollo. When Epic accuses Apollo of killing his wife at a Syndicate meeting Jim tells a different story, that it could have been Leona's husband or lover. To clear himself Apollo produces the imprisoned Parnell, at which point the police move in and arrest everyone.

Syndicater John Vayle, a member of the Luchek Family, dies in a plane explosion - the IMF believes Vayle's wife Eve set him up to get hold of records, which would be invaluable as evidence against Luchek. Eve has the records and plans to blackmail Luchek - Jim pretends to be a killer sent after her who Eve plays to find out who wanted her dead. The IMF set it up to look like her husband John is still alive and using truth serum on her in her sleep to provide the location of the records. Barney, a crooked cop, claims that he was working with Johnny and killed him afterward, and Eve has to check the records to make sure they still exist - the IMF follow her and Luchek to them and arrest everyone.