An awards dinner sponsored by the Crime Writers of America is being held at the residence of writer Edgar Manning who is the recipient of the Blunt Instrument Award. Ellery is not present at the dinner due to the fact that he's home sick with a head cold. Nasty, egotistical Manning calls up Ellery on the telephone in order to gloat about his win and is murdered while speaking with our hero on the phone. It might take a quantum leap for our hero to solve this one.

Simon Brimmer arrives at a restaurant where he is to give a live-remote broadcast of his highly rated mystery radio program. Ellery and the Inspector are invited to attend. As you would figure, a murder is committed on the premises. One of the owners is poisoned by a bottle of wine. Can Simon beat Ellery to the solution of the case? Of course not.

Heeeeeeeeeeere's Ed. Ed McMahon, that is, who plays a once brilliant but now seemingly senile inventor who is murdered in his electric train workshop. This one's a toughie because it appears as though no one could have entered or left the workshop during the time in which the murder must have taken place.

Ellery's old college chum, Linville Hagen, is accused of murdering mobster Nick Danello and Ellery must find a missing witness who can prove his innocence. This missing witness was a woman wearing a green dress. This description, of course, could fit any woman in New York. Ole Frank Flannigan comes along for the ride too and this time he's not quite so antagonistic towards Ellery.

The Queens investigate when a wealthy industrialist and war profiteer is stabbed to death with a Chinese ceremonial dagger and then dragged out of his house and hung from a tree with a crown of thorns placed on his head. Just like one Judas Iscariot. As usual, plenty of suspects abound and when it's discovered that the victim was dying of acute lymphoma the plot only thickens.