An ""angel"" visits Father Dowling and Sister Steve at the parish and delivers a stern warning that big trouble is hiding just around the next corner. One of the parishioners is about to be ""charged"" with the ""crime"" of guilt by association when it is revealed that his late father was connected with the underworld.

A flim flam con-man has his eye on a valuable church receptacle that Father Prestwick is taking to Romania. He'll stop at nothing to get his hands on the monstrance, even if he has to permanently inconvenience Father Prestwick. It's up to Father Dowling and Sister Steve to put a cap on the con.

The local hospital is the scene of some 'extra' deaths when Father Dowling and Sister Steve uncover a string of mystery murders. Father Prestwick insists on helping out and almost becomes the next victim.

Everyone is enjoying the slice of Hollywood as a movie crew uses St. Michael's as a location, until a series of unexplained, and life-threatening, accidents put a damper on the mood. Father Dowling and Sister Steve are enlisted to assist in the investigation while Father Prestwick decides to make his screen debut...as a stand in.

Sister Steve's return to her Mother's house to celebrate the convent's Silver Jubilee ceremonies should be a time of great joy for everyone. But shortly after arriving the Sister discovers a nun with a gun. Not quite what she expected. And her worst fears are indeed realized when another visiting nun is murdered.

There's a murder attempt on a woman who has left her son in the temporary care of St. Michael's and the search for the culprit leads to a department store on Christmas Eve.

Trouble is brewing for Father Dowling when his evil twin brother rolls into town. Blaine manages to frame his brother for a bank robbery, while protecting himself with a perfect alibi: He's been arrested for overdue parking tickets. With the help of Sister Steve, Father Dowling masquerades as his troublesome twin in order to track down his underworld associates.

A blast from the past rocks Father Dowling's world when a man he's never met shows up claiming to be his son. The man disappears before Father Dowling can question him. And then his would-be son is charged with murder.

While visiting the Chicago Museum to take in a Pharaoh's burial chamber, Father Dowling and Sister Steve encounter an ancient Egyptian curse. Father Prestwick almost becomes a victim himself when he attempts to uncover the tomb's deadly secrets.

An author who used Dowling and Steve as characters in his murder mystery dies before its completion.