A woman who discovered her daughter's husband has a gun but couldn't find it when she tries to tell her daughter about calls McCall. McCall initially refuses to help until he sees the man following them. Later McCall thinks he's a terrorist, the Feds are looking for so he calls the agent in charge. He learns that they are being aided by a man who knows the terrorist who is now a priest whom McCall also knows and hates so he doesn't want to do anything with him.

A terrorist blends in with visitors from all over the world at a Roman Catholic religious festival, His former partner, who repented and became a monk, arrives in New York to search for him. The partner suspects that the terrorist will hit the religious festival to show his contempt for Christianity, in the guise of a priest he has murdered. The title is quite literal, because the terrorist plans to commit perhaps the ultimate act of blasphemy by pouring the poison into a chalice of wine -- which is to be converted to Christ's blood -- and serve it to a thousand ...

A Russian scientist who's in New York City gets away from his security and goes to the home of a friend. Later some American agents show up and ask him if he wants to defect and when he says yes they take him in. The scientist's friend is later approached by someone who wants her to help them take the scientist out or else her parents will be killed. She then calls McCall and tries to neutralize them.

When Scott can't find his father, he first calls Control but they give him the brush off. He later finds a message from his father telling him to contact a man named Dyson who also worked for the Agency and like McCall wanted out. Dyson tries to find him and thinks that the KGB might be involved, so he breaks out another former Agency operative, Harley Gage to help him. They discover that the KGB has nothing to do with happened to McCall.

The KGB get McCall and take him to the Russian embassy. McCall was shot so they try to treat him before sending him to Russia. Dyson upon learning this tries to get him out by getting into the Embassy along with Gage. They tell Kostmayer to sit on Control because they fear he might try to stop them. Eventually his people find him and tries to contact someone at the Embassy. Eventually Dyson and Gage are caught.

McCall and Gage attend the rehearsal of a play in which the daughter of an associate will be starring. While she's in her dressing room, a shadowy figure tells her to leave. Later they discover that someone has cut the phone lines and booby trapped the theatre so when anyone comes inside, the bomb will go off. So they have to find the one who planted it so they can deactivate it. And it's while they wait that they discover that the people there know more than they are telling.

A robbery gang of semi-homeless kids is run by a ruthless manipulator (Frank Whaley). One of the kids has a caring single mother who enlists the Equalizer to look into things. When the gang boss shows his true colours anytime the possibility arises to advance in the world, the boys and The Equalizer bring him to justice.

When the son of a woman who was fathered by a Swiss diplomat is missing, she calls McCall. He then talks to the boy's father and learns that he's in bed with some criminals who use him to get their money into Swiss banks. It seems he stole from them and it appears they grabbed his son to get him to return it but he claims that he sent the money out of the country. So McCall tries to shake the men who have the boy.

An attractive divorcee, Susan Foxworth, has become the target of malicious & vindictive stalking from her psychopathic ex-husband, Gary. Despite her repeated complaints to the police, they state they are powerless to act until her ex does something to harm her or her children. Susan turns to Robert McCall for help, who discovers some chilling facts about her ex-husband's past. When the psychopathic ex finds out that McCall is working for Susan, he breaks into her home in the hope of killing her, but McCall has set a clever trap for him...