Three bodies are found. Beside each lies a copy of the ABC Railway Guide. The police are baffled. But the killer has made one mistake. He has challenged Hercule Poirot to unmask him.
Alex Knight, Allan Mitchell, Andrew Williamson, Ann Windsor, Campbell Graham, Cathryn Bradshaw, Claude Close, Clifford Milner, David Fox, David McAlister, Donald Douglas, Donald Sumpter, Gordon Salkilld, Jane Birdsall, Jeremy Hawk, John Breslin, Lucinda Curtis, Michael Mellinger, Michael Mellinger, Nicholas Farrell, Nina Marc, Norman MacDonald, Peter Penry-Jones, Philip Anthony, Pippa Guard, Vivienne Burgess