Brian opened the door by his wand for the mysterious guy, only for safety. He didnt want him to run or disappear no matter if he had equipped with wand or not. "Just one or two questions for clarification. If I'm satisfied, I'll let you free to go.
So co-operate for your own good." he told and gestured him to sit in one of the chairs around the big blue center table.

Olivia was still there, monitoring the situation around the fountain and other areas. He admired her dedication and sinceority inwardly and put the charm on the door so that no one could come in or get out unofficially.