Den of Assassins (2)

At the end of dark stairways. 

Ace looked at the tightly shut door protected by a formation. His eyes suddenly stopped at the impression on the sidewall. 

'Heh, they making it easier for me.' Ace grinned as a black wooden token appeared in his hand, there was a vivid red skull engraved on it and the skull eyes sockets were lit in purple flame. 

This was the purple ghost token he took from the assassin he killed, and it was also an identity token of every Ghost Assassin. 

Ace pressed the wooden token in the impression on the sidewall and the purple flame inside the skull's sockets flashed and the next moment the large door creaked open. 

Ace put the ghost token inside this thief's space and enter a large lobby lit in soft blue light. 

Right in the center of this lobby, there was a huge blackboard and different posters of people were pinned on it with a number below.