
I think its the right time for giving a hint towards another direction.
I have spared neither costs nor effort to get a photo of the evidence in question.
So for all of you who want to see the cards found in that room
please take a peek …

Hope that won't give away too much but wanted to excuse somehow for the confusion that I caused by my bad english knowledge.
Until the latest explanations I still thought of a fortune-telling cards game and didn't realize that it simply was the question
about what kind of cards have been found.

(even if it doesn't matter what kind of cards it was â€" but it feels right that way).
CASE # 2:
They found three dead bodies in the room, also a set of cards and a revolver.
What happened?
Yes

Were they playing some form of Russian Roulette with the cards and the gun?
Had the revolver been fired by one of the people found dead?
Was (one of) the people shot?
They each drew a card ...
Did any of the three shoot themselves?
Did one of them shot himself?
… was it a suicide?
Were the cards 'playing cards'?
Were the three dead bodies all human?
Did the person who was shot die before the two others?
Is the number/value/color of the card each one drew relevant to there fate?
No

Were (all of) the people shot?
Was there a 4th person playing cards and lost all his money so he shot the other 3 and fled with the money?
… was there signs of a robbery gone bad?
Did all three die of the same causes?
… the one with the lowest card is going to be killed with the gun,
but before they can reveal their cards one guy picks up the gun and shoots the other two,
then he turns over the cards and realizes he had the lowest card then dies from a heart attack.
Had the gun been fired more than once?
Were the cards business cards?
Was one of the three people a magician?
Did at least one of the three people die of natural causes?
Did at least one of the three people die of poison?
Did at least one of the three people get stabbed?
Did at least one of the three people get bludgeoned?
Were there still bullets in the gun?
Did they play a game that they thought only one of them would survive?
Did one of the people shoot the two others?
Did they each look at their own card and assumed that they had won or lost?
If so (shot himself), was it an accident?
Did one of the men get busted for cheating at the game?
Did the third guy laugh himself to death?

Did one of the 3 guys strangle one of the others?
irrelevant/don't know myself

did the dead bodies have money on them, …
Are the cards 'playing cards' of the suited 1-10 Jack Queen King Ace variety?