When Roca sees that there are not many of them that remains anymore, it is now only three of them, Raymond, Fash, Sandra, Roca decides to eliminate Sandra himself because Roca knows that he did not actually needs Sandra for the final game he wants to play.
All the five levels of game that they have played is just a game of selection to Roca, the main reason for really creating the game is to select who he think will be useful for him.
Roca has not made known unto anyone the real thing he wants, he only use them in playing games, but the main reason is only known to him. He needs only the strongest to play the real game for him.
He thought it will be Tommy and Raymond that will be his last cards, that is why he helped Tommy defeat Torrent by giving him the small knife so he will be able
