You do not pause a second. You scoop up the mask and you take it to your trunk. You place in in a fire safe for keeping records and you hide the key in your shoe. You take it home and you hide it in a hidden trap door in the concrete basement. You place a heavy oaken bookcase over it and now its well hidden. When you get on the internet you read about Carney's demise. The bad news is Msytery X and Wu have united to find the entitys involved and kill kill kill. You are a little nervous about that.