4.50 From Paddington

4.50 from Paddington was the train, by which Mrs. McGillicddy was returning home from london.She saw from her carriage window a woman was being srtagled amurdered in the train running parallel to her's. She had reported the phenomenon to the station master of Brackhampton station. But nothing was mentioned in the news paper of the next morning and after enquiring at the police station, police informed that no body was found. None believed her story except her friend miss Jane Marple.......

An apparently impossible solution.

And Then There Were None or Ten Little Indians -by Agatha Christie

"Ten little Indian boys went out to dine;
One choked his little self and then there were nine.

Nine little Indian boys sat up very late;
One overslept himself and then there were eight.

Eight little Indian boys traveling in Devon;
One said he'd stay there and then there were seven.

Seven little Indian boys chopping up sticks;
One chopped himself in halves and then there were six.

Six little Indian boys playing with a hive;
A bumblebee stung one and then there were five.

Five little Indian boys going in for law;
One got in Chancery and then there were four.

Four little Indian boys going out to sea;
A red herring swallowed one and then there were three.

Three little Indian boys walking in the Zoo;
A big bear hugged one and then there were two.

Two little Indian boys sitting in the sun;
One got frizzled up and then there was one.

One little Indian boy left all alone;
He went and hang himself and then there were none.

Ten strangers are gathered together on an isolated island, (Indian Island) by a mysterious host. One by one, the guests share the darkest secrets of their wicked pasts. And one by one, they die.... leaving none.....

'And Then There were None' perhaps the greatest mystery novel of all time.

The Secret Adversary -by Agatha Christie (first adventure of Tommy and Tuppence)

The case of "Jane Finn" brought series of curious and dangerous events in the life of the young adventurers, Mr. Thomas beresford or Tommy and Ms. Prudence Cowley or Tuppence. The only thing they knew about Jane Finn that she was missing for five years and carrying top secret documents. Two adventurers had to fight with the unknown and powerful enemy but the enemy knew where to find Tommy and Tuppence......

Taken at the Flood or There is a Tide -by Agatha Christie

"there is a tide in the affairs of men,
Which, taken at the flood, leads on to fortune;
Omitted, all the voyage of their life
Is bound in shallows and in miseries,
On such a full sea are we now afloat,
And we must take the current when it serves,
Or lose our ventures."

Warmsley Vale was just another sleepy English village, yet a series of misfortune were taken place, and all are associated with Cloade family.

Was it a coincidence or a deliberate crime? Hercule Poirot found himself on a trail as baffling as any he had ever encountered.