Quick answers

What is The A.B.C. Murders about?

There's a serial killer on the loose, bent on working his way though the alphabet. There seems little chance of the murderer being caught - until her makes the crucial and vain mistake of challenging Hercule Poirot to frustrate his plans . . .

When was The A.B.C. Murders published?

The A.B.C. Murders was published in 1936.

Who made The A.B.C. Murders?

The A.B.C. Murders was written by Agatha Christie.